Re: [PATCH 3.2 000/125] 3.2.61-rc1 review

From: Ben Hutchings
Date: Tue Jul 08 2014 - 22:40:46 EST

Next message: ethan zhao: "Re: [PATCH NET-NEXT V2] netxen: fix ethtool rx_dropped information in ethtool get_ethtool_stats()"
Previous message: David Miller: "Re: [PATCH] appletalk: Fix socket referencing in skb"
In reply to: Ben Hutchings: "Re: [PATCH 3.2 000/125] 3.2.61-rc1 review"
Next in thread: Guenter Roeck: "Re: [PATCH 3.2 000/125] 3.2.61-rc1 review"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This is the combined patch for 3.2.61-rc1 relative to 3.2.60.

An additional fix is needed for some architectures:

diff -u b/lib/nlattr.c b/lib/nlattr.c
--- b/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -13,6 +13,7 @@
#include <linux/skbuff.h>
#include <linux/string.h>
#include <linux/ratelimit.h>
+#include <linux/sched.h>
#include <linux/types.h>
#include <net/netlink.h>

--- END ---

Ben.

--
Ben Hutchings
All the simple programs have been written, and all the good names taken.
diff --git a/Documentation/ja_JP/HOWTO b/Documentation/ja_JP/HOWTO
index 050d37f..46ed735 100644
--- a/Documentation/ja_JP/HOWTO
+++ b/Documentation/ja_JP/HOWTO
@@ -315,7 +315,7 @@ Andrew Morton ã Linux-kernel ãããããããããããããããã
ããã2.6.x.y ãããããååãããååãããçåãäçåãã 2.6.x ã
ææãååçããããããã

-2.6.x.y ã "stable" ããã <stable@xxxxxxxxxx> ããããããããããå
+2.6.x.y ã "stable" ããã <stable@xxxxxxxxxxxxxxx> ããããããããããå
èãåãããããããããããéåãããããæéã 2ééæããããåãèã
ãåéãããããããåãéãããããããããããããããããééãåé
ãååããããåãããããããååãããããããããããããã
diff --git a/Documentation/ja_JP/stable_kernel_rules.txt b/Documentation/ja_JP/stable_kernel_rules.txt
index 1426583..9dbda9b 100644
--- a/Documentation/ja_JP/stable_kernel_rules.txt
+++ b/Documentation/ja_JP/stable_kernel_rules.txt
@@ -50,16 +50,16 @@ linux-2.6.29/Documentation/stable_kernel_rules.txt

-stable ããããããããéäããæçã-

- - äèãèåãåããããããçèããåããstable@xxxxxxxxxx ãããã
+ - äèãèåãåããããããçèããåããstable@xxxxxxxxxxxxxxx ãããã
ãéãã
- éäèãããããããããåãäããããéãã ACK ããåäãããåå
ãã NAK ãåãåããããååãéçèããããããããããããããæ
æãããååãããã
- ããåãåãããããããããäãéçèãããééããããããããã
ãããããããããããããããã -stable ããããèåãããã
- - ãããã stable@xxxxxxxxxx ããããããäåãããããããããããã
+ - ãããã stable@xxxxxxxxxxxxxxx ããããããäåãããããããããããã
ã Linus ãããããåãæãèåçã stable ãããã email ãããã
- - ããããããããããããããããã (stable@xxxxxxxxxx) ãéãããã
+ - ããããããããããããããããã (stable@xxxxxxxxxxxxxxx) ãéãããã
ããããããäããã security@xxxxxxxxxx ããããããéãããã

ãããããããã-
diff --git a/Documentation/zh_CN/HOWTO b/Documentation/zh_CN/HOWTO
index faf976c..56ceb05 100644
--- a/Documentation/zh_CN/HOWTO
+++ b/Documentation/zh_CN/HOWTO
@@ -237,7 +237,7 @@ kernel.orgçççpub/linux/kernel/v2.6/çåäæååãåçååéå
åæææ2.6.x.yçæåæååïéäææç2.6.xçæåæåçåäæååççå
çåæã

-2.6.x.yçæçâçåçâåçïéäåå<stable@xxxxxxxxxx>ïçæïäèéåå
+2.6.x.yçæçâçåçâåçïéäåå<stable@xxxxxxxxxxxxxxx>ïçæïäèéåå
åæçæã

åææçäçDocumentation/stable_kernel_rules.txtæäåäæèäåèçå
diff --git a/Documentation/zh_CN/stable_kernel_rules.txt b/Documentation/zh_CN/stable_kernel_rules.txt
index b5b9b0a..26ea5ed 100644
--- a/Documentation/zh_CN/stable_kernel_rules.txt
+++ b/Documentation/zh_CN/stable_kernel_rules.txt
@@ -42,7 +42,7 @@ Documentation/stable_kernel_rules.txt çäæçè

åçåçäçææäèäçèçï

- - åçèäèäçåääçèååïåèäåéåstable@xxxxxxxxxxã
+ - åçèäèäçåääçèååïåèäåéåstable@xxxxxxxxxxxxxxxã
- åæèäèæååéåéïåéèäæåääACKååïåæææèæåïæ
åçæNAKååãååéèååçæéïèååäååèçæéåæã
- èæåçèääèååçåçæéåéïçååäååèçåæã
diff --git a/Makefile b/Makefile
index 317d5ea..877bb13 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 2
-SUBLEVEL = 60
-EXTRAVERSION =
+SUBLEVEL = 61
+EXTRAVERSION = -rc1
NAME = Saber-toothed Squirrel

# *DOCUMENTATION*
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 292c3f8..18a2858 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -158,8 +158,9 @@ extern int __put_user_8(void *, unsigned long long);
#define put_user(x,p) \
({ \
unsigned long __limit = current_thread_info()->addr_limit - 1; \
+ const typeof(*(p)) __user *__tmp_p = (p); \
register const typeof(*(p)) __r2 asm("r2") = (x); \
- register const typeof(*(p)) __user *__p asm("r0") = (p);\
+ register const typeof(*(p)) __user *__p asm("r0") = __tmp_p; \
register unsigned long __l asm("r1") = __limit; \
register int __e asm("r0"); \
switch (sizeof(*(__p))) { \
diff --git a/arch/arm/kernel/crash_dump.c b/arch/arm/kernel/crash_dump.c
index 90c50d4..5d1286d 100644
--- a/arch/arm/kernel/crash_dump.c
+++ b/arch/arm/kernel/crash_dump.c
@@ -39,7 +39,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
if (!csize)
return 0;

- vaddr = ioremap(pfn << PAGE_SHIFT, PAGE_SIZE);
+ vaddr = ioremap(__pfn_to_phys(pfn), PAGE_SIZE);
if (!vaddr)
return -ENOMEM;

diff --git a/arch/arm/plat-mxc/devices/platform-ipu-core.c b/arch/arm/plat-mxc/devices/platform-ipu-core.c
index 79d340a..15f3421 100644
--- a/arch/arm/plat-mxc/devices/platform-ipu-core.c
+++ b/arch/arm/plat-mxc/devices/platform-ipu-core.c
@@ -77,7 +77,7 @@ struct platform_device *__init imx_alloc_mx3_camera(

pdev = platform_device_alloc("mx3-camera", 0);
if (!pdev)
- goto err;
+ return ERR_PTR(-ENOMEM);

pdev->dev.dma_mask = kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
if (!pdev->dev.dma_mask)
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index adda036..35d1b47 100644
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -149,6 +149,8 @@ register struct thread_info *__current_thread_info __asm__("$28");
#define _TIF_FPUBOUND (1<<TIF_FPUBOUND)
#define _TIF_LOAD_WATCH (1<<TIF_LOAD_WATCH)

+#define _TIF_WORK_SYSCALL_ENTRY (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP)
+
/* work to do in syscall_trace_leave() */
#define _TIF_WORK_SYSCALL_EXIT (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT)

diff --git a/arch/mips/kernel/irq-msc01.c b/arch/mips/kernel/irq-msc01.c
index 14ac52c..884de34 100644
--- a/arch/mips/kernel/irq-msc01.c
+++ b/arch/mips/kernel/irq-msc01.c
@@ -131,7 +131,7 @@ void __init init_msc_irqs(unsigned long icubase, unsigned int irqbase, msc_irqma

board_bind_eic_interrupt = &msc_bind_eic_interrupt;

- for (; nirq >= 0; nirq--, imp++) {
+ for (; nirq > 0; nirq--, imp++) {
int n = imp->im_irq;

switch (imp->im_type) {
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index a632bc1..1d39bea 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -52,7 +52,7 @@ NESTED(handle_sys, PT_SIZE, sp)

stack_done:
lw t0, TI_FLAGS($28) # syscall tracing enabled?
- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+ li t1, _TIF_WORK_SYSCALL_ENTRY
and t0, t1
bnez t0, syscall_trace_entry # -> yes

diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index 3b5a5e9..53e65ff 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -54,7 +54,7 @@ NESTED(handle_sys64, PT_SIZE, sp)

sd a3, PT_R26(sp) # save a3 for syscall restarting

- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+ li t1, _TIF_WORK_SYSCALL_ENTRY
LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
and t0, t1, t0
bnez t0, syscall_trace_entry
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 6be6f70..5476ce4 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -53,7 +53,7 @@ NESTED(handle_sysn32, PT_SIZE, sp)

sd a3, PT_R26(sp) # save a3 for syscall restarting

- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+ li t1, _TIF_WORK_SYSCALL_ENTRY
LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
and t0, t1, t0
bnez t0, n32_syscall_trace_entry
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 5422855..a56175b 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -81,7 +81,7 @@ NESTED(handle_sys, PT_SIZE, sp)
PTR 4b, bad_stack
.previous

- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+ li t1, _TIF_WORK_SYSCALL_ENTRY
LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
and t0, t1, t0
bnez t0, trace_a_syscall
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 70ba0c0..9a980b3 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -69,7 +69,9 @@ LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-yy)

CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=no -mcall-aixdesc
CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple
-KBUILD_CPPFLAGS += -Iarch/$(ARCH)
+asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
+
+KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr)
KBUILD_AFLAGS += -Iarch/$(ARCH)
KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
CPP = $(CC) -E $(KBUILD_CFLAGS)
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index 368f72f..0f3a740 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -292,11 +292,16 @@ n:
* ld rY,ADDROFF(name)(rX)
*/
#ifdef __powerpc64__
+#ifdef HAVE_AS_ATHIGH
+#define __AS_ATHIGH high
+#else
+#define __AS_ATHIGH h
+#endif
#define LOAD_REG_IMMEDIATE(reg,expr) \
lis (reg),(expr)@highest; \
ori (reg),(reg),(expr)@higher; \
rldicr (reg),(reg),32,31; \
- oris (reg),(reg),(expr)@h; \
+ oris reg,reg,(expr)@__AS_ATHIGH; \
ori (reg),(reg),(expr)@l;

#define LOAD_REG_ADDR(reg,name) \
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index c7b5afe..c77159d 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -48,6 +48,9 @@ static struct __initdata of_device_id legacy_serial_parents[] = {
static unsigned int legacy_serial_count;
static int legacy_serial_console = -1;

+static const upf_t legacy_port_flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
+ UPF_SHARE_IRQ | UPF_FIXED_PORT;
+
static unsigned int tsi_serial_in(struct uart_port *p, int offset)
{
unsigned int tmp;
@@ -153,8 +156,6 @@ static int __init add_legacy_soc_port(struct device_node *np,
{
u64 addr;
const u32 *addrp;
- upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ
- | UPF_FIXED_PORT;
struct device_node *tsi = of_get_parent(np);

/* We only support ports that have a clock frequency properly
@@ -185,9 +186,11 @@ static int __init add_legacy_soc_port(struct device_node *np,
* IO port value. It will be fixed up later along with the irq
*/
if (tsi && !strcmp(tsi->type, "tsi-bridge"))
- return add_legacy_port(np, -1, UPIO_TSI, addr, addr, NO_IRQ, flags, 0);
+ return add_legacy_port(np, -1, UPIO_TSI, addr, addr,
+ NO_IRQ, legacy_port_flags, 0);
else
- return add_legacy_port(np, -1, UPIO_MEM, addr, addr, NO_IRQ, flags, 0);
+ return add_legacy_port(np, -1, UPIO_MEM, addr, addr,
+ NO_IRQ, legacy_port_flags, 0);
}

static int __init add_legacy_isa_port(struct device_node *np,
@@ -228,7 +231,7 @@ static int __init add_legacy_isa_port(struct device_node *np,

/* Add port, irq will be dealt with later */
return add_legacy_port(np, index, UPIO_PORT, be32_to_cpu(reg[1]), taddr,
- NO_IRQ, UPF_BOOT_AUTOCONF, 0);
+ NO_IRQ, legacy_port_flags, 0);

}

@@ -301,7 +304,7 @@ static int __init add_legacy_pci_port(struct device_node *np,
* IO port value. It will be fixed up later along with the irq
*/
return add_legacy_port(np, index, iotype, base, addr, NO_IRQ,
- UPF_BOOT_AUTOCONF, np != pci_dev);
+ legacy_port_flags, np != pci_dev);
}
#endif

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 77bb77d..82288e9 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -449,7 +449,7 @@ void __init smp_setup_cpu_maps(void)
for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) {
DBG(" thread %d -> cpu %d (hard id %d)\n",
j, cpu, intserv[j]);
- set_cpu_present(cpu, true);
+ set_cpu_present(cpu, of_device_is_available(dn));
set_hard_smp_processor_id(cpu, intserv[j]);
set_cpu_possible(cpu, true);
cpu++;
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 9e13c7d..454564b 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -140,9 +140,9 @@ struct _lowcore {
__u8 pad_0x02e8[0x0300-0x02e8]; /* 0x02e8 */

/* Interrupt response block */
- __u8 irb[64]; /* 0x0300 */
+ __u8 irb[96]; /* 0x0300 */

- __u8 pad_0x0340[0x0e00-0x0340]; /* 0x0340 */
+ __u8 pad_0x0360[0x0e00-0x0360]; /* 0x0360 */

/*
* 0xe00 contains the address of the IPL Parameter Information
@@ -274,12 +274,13 @@ struct _lowcore {
__u64 cmf_hpp; /* 0x0378 */

/* Interrupt response block. */
- __u8 irb[64]; /* 0x0380 */
+ __u8 irb[96]; /* 0x0380 */
+ __u8 pad_0x03e0[0x0400-0x03e0]; /* 0x03e0 */

/* Per cpu primary space access list */
- __u32 paste[16]; /* 0x03c0 */
+ __u32 paste[16]; /* 0x0400 */

- __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */
+ __u8 pad_0x0440[0x0e00-0x0440]; /* 0x0440 */

/*
* 0xe00 contains the address of the IPL Parameter Information
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 3b96fd4..0581a85 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -287,6 +287,22 @@ static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,

#define ARCH_HAS_USER_SINGLE_STEP_INFO

+/*
+ * When hitting ptrace_stop(), we cannot return using SYSRET because
+ * that does not restore the full CPU state, only a minimal set. The
+ * ptracer can change arbitrary register values, which is usually okay
+ * because the usual ptrace stops run off the signal delivery path which
+ * forces IRET; however, ptrace_event() stops happen in arbitrary places
+ * in the kernel and don't force IRET path.
+ *
+ * So force IRET path after a ptrace stop.
+ */
+#define arch_ptrace_stop_needed(code, info) \
+({ \
+ set_thread_flag(TIF_NOTIFY_RESUME); \
+ false; \
+})
+
struct user_desc;
extern int do_get_thread_area(struct task_struct *p, int idx,
struct user_desc __user *info);
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index d2d488b8..db090f6 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -427,9 +427,10 @@ sysenter_past_esp:
jnz sysenter_audit
sysenter_do_call:
cmpl $(nr_syscalls), %eax
- jae syscall_badsys
+ jae sysenter_badsys
call *sys_call_table(,%eax,4)
movl %eax,PT_EAX(%esp)
+sysenter_after_call:
LOCKDEP_SYS_EXIT
DISABLE_INTERRUPTS(CLBR_ANY)
TRACE_IRQS_OFF
@@ -681,7 +682,12 @@ END(syscall_fault)

syscall_badsys:
movl $-ENOSYS,PT_EAX(%esp)
- jmp resume_userspace
+ jmp syscall_exit
+END(syscall_badsys)
+
+sysenter_badsys:
+ movl $-ENOSYS,PT_EAX(%esp)
+ jmp sysenter_after_call
END(syscall_badsys)
CFI_ENDPROC
/*
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index f324429..3a0e92a 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -57,6 +57,12 @@ EXPORT_SYMBOL(acpi_root_dir);

#ifdef CONFIG_X86
+#ifdef CONFIG_ACPI_CUSTOM_DSDT
+static inline int set_copy_dsdt(const struct dmi_system_id *id)
+{
+ return 0;
+}
+#else
static int set_copy_dsdt(const struct dmi_system_id *id)
{
printk(KERN_NOTICE "%s detected - "
@@ -64,6 +70,7 @@ static int set_copy_dsdt(const struct dmi_system_id *id)
acpi_gbl_copy_dsdt_locally = 1;
return 0;
}
+#endif

static struct dmi_system_id dsdt_dmi_table[] __initdata = {
/*
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 0feffc3..44a4434 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -452,10 +452,14 @@ static const struct pci_device_id ahci_pci_tbl[] = {
.driver_data = board_ahci_yes_fbs }, /* 88se9172 */
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9192),
.driver_data = board_ahci_yes_fbs }, /* 88se9172 on some Gigabyte */
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0),
+ .driver_data = board_ahci_yes_fbs },
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a3),
.driver_data = board_ahci_yes_fbs },
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
.driver_data = board_ahci_yes_fbs },
+ { PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642),
+ .driver_data = board_ahci_yes_fbs },

/* Promise */
{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 8f3d6db..08bbc48 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -120,10 +120,6 @@ static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu)

int hci_uart_tx_wakeup(struct hci_uart *hu)
{
- struct tty_struct *tty = hu->tty;
- struct hci_dev *hdev = hu->hdev;
- struct sk_buff *skb;
-
if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) {
set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
return 0;
@@ -131,6 +127,22 @@ int hci_uart_tx_wakeup(struct hci_uart *hu)

BT_DBG("");

+ schedule_work(&hu->write_work);
+
+ return 0;
+}
+
+static void hci_uart_write_work(struct work_struct *work)
+{
+ struct hci_uart *hu = container_of(work, struct hci_uart, write_work);
+ struct tty_struct *tty = hu->tty;
+ struct hci_dev *hdev = hu->hdev;
+ struct sk_buff *skb;
+
+ /* REVISIT: should we cope with bad skbs or ->write() returning
+ * and error value ?
+ */
+
restart:
clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);

@@ -155,7 +167,6 @@ restart:
goto restart;

clear_bit(HCI_UART_SENDING, &hu->tx_state);
- return 0;
}

/* ------- Interface to HCI layer ------ */
@@ -274,6 +285,8 @@ static int hci_uart_tty_open(struct tty_struct *tty)
hu->tty = tty;
tty->receive_room = 65536;

+ INIT_WORK(&hu->write_work, hci_uart_write_work);
+
spin_lock_init(&hu->rx_lock);

/* Flush any pending characters in the driver and line discipline. */
@@ -308,6 +321,8 @@ static void hci_uart_tty_close(struct tty_struct *tty)
if (hdev)
hci_uart_close(hdev);

+ cancel_work_sync(&hu->write_work);
+
if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) {
if (hdev) {
hci_unregister_dev(hdev);
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
index 99fb352..ff40400 100644
--- a/drivers/bluetooth/hci_uart.h
+++ b/drivers/bluetooth/hci_uart.h
@@ -64,6 +64,8 @@ struct hci_uart {
unsigned long flags;
unsigned long hdev_flags;

+ struct work_struct write_work;
+
struct hci_uart_proto *proto;
void *priv;

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index acfe567..0731d43 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -456,8 +456,9 @@ long drm_ioctl(struct file *filp,
retcode = -EFAULT;
goto err_i1;
}
- } else
+ } else if (cmd & IOC_OUT) {
memset(kdata, 0, usize);
+ }

if (ioctl->flags & DRM_UNLOCKED)
retcode = func(dev, kdata, file_priv);
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index b1bb734..a0b69ae 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -287,14 +287,14 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
* exec_object list, so it should have a GTT space bound by now.
*/
if (unlikely(target_offset == 0)) {
- DRM_ERROR("No GTT space found for object %d\n",
+ DRM_DEBUG("No GTT space found for object %d\n",
reloc->target_handle);
return ret;
}

/* Validate that the target is in a valid r/w GPU domain */
if (unlikely(reloc->write_domain & (reloc->write_domain - 1))) {
- DRM_ERROR("reloc with multiple write domains: "
+ DRM_DEBUG("reloc with multiple write domains: "
"obj %p target %d offset %d "
"read %08x write %08x",
obj, reloc->target_handle,
@@ -304,7 +304,7 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
return ret;
}
if (unlikely((reloc->write_domain | reloc->read_domains) & I915_GEM_DOMAIN_CPU)) {
- DRM_ERROR("reloc with read/write CPU domains: "
+ DRM_DEBUG("reloc with read/write CPU domains: "
"obj %p target %d offset %d "
"read %08x write %08x",
obj, reloc->target_handle,
@@ -315,7 +315,7 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
}
if (unlikely(reloc->write_domain && target_obj->pending_write_domain &&
reloc->write_domain != target_obj->pending_write_domain)) {
- DRM_ERROR("Write domain conflict: "
+ DRM_DEBUG("Write domain conflict: "
"obj %p target %d offset %d "
"new %08x old %08x\n",
obj, reloc->target_handle,
@@ -336,7 +336,7 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,

/* Check that the relocation address is valid... */
if (unlikely(reloc->offset > obj->base.size - 4)) {
- DRM_ERROR("Relocation beyond object bounds: "
+ DRM_DEBUG("Relocation beyond object bounds: "
"obj %p target %d offset %d size %d.\n",
obj, reloc->target_handle,
(int) reloc->offset,
@@ -344,7 +344,7 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
return ret;
}
if (unlikely(reloc->offset & 3)) {
- DRM_ERROR("Relocation not 4-byte aligned: "
+ DRM_DEBUG("Relocation not 4-byte aligned: "
"obj %p target %d offset %d.\n",
obj, reloc->target_handle,
(int) reloc->offset);
@@ -679,9 +679,9 @@ i915_gem_execbuffer_relocate_slow(struct drm_device *dev,
* relocations were valid.
*/
for (j = 0; j < exec[i].relocation_count; j++) {
- if (copy_to_user(&user_relocs[j].presumed_offset,
- &invalid_offset,
- sizeof(invalid_offset))) {
+ if (__copy_to_user(&user_relocs[j].presumed_offset,
+ &invalid_offset,
+ sizeof(invalid_offset))) {
ret = -EFAULT;
mutex_lock(&dev->struct_mutex);
goto err;
@@ -704,7 +704,7 @@ i915_gem_execbuffer_relocate_slow(struct drm_device *dev,
obj = to_intel_bo(drm_gem_object_lookup(dev, file,
exec[i].handle));
if (&obj->base == NULL) {
- DRM_ERROR("Invalid object handle %d at index %d\n",
+ DRM_DEBUG("Invalid object handle %d at index %d\n",
exec[i].handle, i);
ret = -ENOENT;
goto err;
@@ -1015,7 +1015,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
int ret, mode, i;

if (!i915_gem_check_execbuffer(args)) {
- DRM_ERROR("execbuf with invalid offset/length\n");
+ DRM_DEBUG("execbuf with invalid offset/length\n");
return -EINVAL;
}

@@ -1030,20 +1030,20 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
break;
case I915_EXEC_BSD:
if (!HAS_BSD(dev)) {
- DRM_ERROR("execbuf with invalid ring (BSD)\n");
+ DRM_DEBUG("execbuf with invalid ring (BSD)\n");
return -EINVAL;
}
ring = &dev_priv->ring[VCS];
break;
case I915_EXEC_BLT:
if (!HAS_BLT(dev)) {
- DRM_ERROR("execbuf with invalid ring (BLT)\n");
+ DRM_DEBUG("execbuf with invalid ring (BLT)\n");
return -EINVAL;
}
ring = &dev_priv->ring[BCS];
break;
default:
- DRM_ERROR("execbuf with unknown ring: %d\n",
+ DRM_DEBUG("execbuf with unknown ring: %d\n",
(int)(args->flags & I915_EXEC_RING_MASK));
return -EINVAL;
}
@@ -1069,18 +1069,18 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
}
break;
default:
- DRM_ERROR("execbuf with unknown constants: %d\n", mode);
+ DRM_DEBUG("execbuf with unknown constants: %d\n", mode);
return -EINVAL;
}

if (args->buffer_count < 1) {
- DRM_ERROR("execbuf with %d buffers\n", args->buffer_count);
+ DRM_DEBUG("execbuf with %d buffers\n", args->buffer_count);
return -EINVAL;
}

if (args->num_cliprects != 0) {
if (ring != &dev_priv->ring[RCS]) {
- DRM_ERROR("clip rectangles are only valid with the render ring\n");
+ DRM_DEBUG("clip rectangles are only valid with the render ring\n");
return -EINVAL;
}

@@ -1130,7 +1130,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
obj = to_intel_bo(drm_gem_object_lookup(dev, file,
exec[i].handle));
if (&obj->base == NULL) {
- DRM_ERROR("Invalid object handle %d at index %d\n",
+ DRM_DEBUG("Invalid object handle %d at index %d\n",
exec[i].handle, i);
/* prevent error path from reading uninitialized data */
ret = -ENOENT;
@@ -1138,7 +1138,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
}

if (!list_empty(&obj->exec_list)) {
- DRM_ERROR("Object %p [handle %d, index %d] appears more than once in object list\n",
+ DRM_DEBUG("Object %p [handle %d, index %d] appears more than once in object list\n",
obj, exec[i].handle, i);
ret = -EINVAL;
goto err;
@@ -1176,7 +1176,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,

/* Set the pending read domains for the batch buffer to COMMAND */
if (batch_obj->base.pending_write_domain) {
- DRM_ERROR("Attempting to use self-modifying batch buffer\n");
+ DRM_DEBUG("Attempting to use self-modifying batch buffer\n");
ret = -EINVAL;
goto err;
}
@@ -1275,7 +1275,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
int ret, i;

if (args->buffer_count < 1) {
- DRM_ERROR("execbuf with %d buffers\n", args->buffer_count);
+ DRM_DEBUG("execbuf with %d buffers\n", args->buffer_count);
return -EINVAL;
}

@@ -1283,7 +1283,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count);
exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count);
if (exec_list == NULL || exec2_list == NULL) {
- DRM_ERROR("Failed to allocate exec list for %d buffers\n",
+ DRM_DEBUG("Failed to allocate exec list for %d buffers\n",
args->buffer_count);
drm_free_large(exec_list);
drm_free_large(exec2_list);
@@ -1294,7 +1294,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
(uintptr_t) args->buffers_ptr,
sizeof(*exec_list) * args->buffer_count);
if (ret != 0) {
- DRM_ERROR("copy %d exec entries failed %d\n",
+ DRM_DEBUG("copy %d exec entries failed %d\n",
args->buffer_count, ret);
drm_free_large(exec_list);
drm_free_large(exec2_list);
@@ -1325,19 +1325,21 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,

ret = i915_gem_do_execbuffer(dev, data, file, &exec2, exec2_list);
if (!ret) {
+ struct drm_i915_gem_exec_object __user *user_exec_list =
+ (void __user *)(uintptr_t)args->buffers_ptr;
+
/* Copy the new buffer offsets back to the user's exec list. */
- for (i = 0; i < args->buffer_count; i++)
- exec_list[i].offset = exec2_list[i].offset;
- /* ... and back out to userspace */
- ret = copy_to_user((struct drm_i915_relocation_entry __user *)
- (uintptr_t) args->buffers_ptr,
- exec_list,
- sizeof(*exec_list) * args->buffer_count);
- if (ret) {
- ret = -EFAULT;
- DRM_ERROR("failed to copy %d exec entries "
- "back to user (%d)\n",
- args->buffer_count, ret);
+ for (i = 0; i < args->buffer_count; i++) {
+ ret = __copy_to_user(&user_exec_list[i].offset,
+ &exec2_list[i].offset,
+ sizeof(user_exec_list[i].offset));
+ if (ret) {
+ ret = -EFAULT;
+ DRM_DEBUG("failed to copy %d exec entries "
+ "back to user (%d)\n",
+ args->buffer_count, ret);
+ break;
+ }
}
}

@@ -1356,7 +1358,7 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data,

if (args->buffer_count < 1 ||
args->buffer_count > UINT_MAX / sizeof(*exec2_list)) {
- DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count);
+ DRM_DEBUG("execbuf2 with %d buffers\n", args->buffer_count);
return -EINVAL;
}

@@ -1366,7 +1368,7 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data,
exec2_list = drm_malloc_ab(sizeof(*exec2_list),
args->buffer_count);
if (exec2_list == NULL) {
- DRM_ERROR("Failed to allocate exec list for %d buffers\n",
+ DRM_DEBUG("Failed to allocate exec list for %d buffers\n",
args->buffer_count);
return -ENOMEM;
}
@@ -1375,7 +1377,7 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data,
(uintptr_t) args->buffers_ptr,
sizeof(*exec2_list) * args->buffer_count);
if (ret != 0) {
- DRM_ERROR("copy %d exec entries failed %d\n",
+ DRM_DEBUG("copy %d exec entries failed %d\n",
args->buffer_count, ret);
drm_free_large(exec2_list);
return -EFAULT;
@@ -1384,15 +1386,21 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data,
ret = i915_gem_do_execbuffer(dev, data, file, args, exec2_list);
if (!ret) {
/* Copy the new buffer offsets back to the user's exec list. */
- ret = copy_to_user((struct drm_i915_relocation_entry __user *)
- (uintptr_t) args->buffers_ptr,
- exec2_list,
- sizeof(*exec2_list) * args->buffer_count);
- if (ret) {
- ret = -EFAULT;
- DRM_ERROR("failed to copy %d exec entries "
- "back to user (%d)\n",
- args->buffer_count, ret);
+ struct drm_i915_gem_exec_object2 __user *user_exec_list =
+ (void __user *)(uintptr_t)args->buffers_ptr;
+ int i;
+
+ for (i = 0; i < args->buffer_count; i++) {
+ ret = __copy_to_user(&user_exec_list[i].offset,
+ &exec2_list[i].offset,
+ sizeof(user_exec_list[i].offset));
+ if (ret) {
+ ret = -EFAULT;
+ DRM_DEBUG("failed to copy %d exec entries "
+ "back to user\n",
+ args->buffer_count);
+ break;
+ }
}
}

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index cd98c06..927d170 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -830,14 +830,16 @@ static void atombios_crtc_program_pll(struct drm_crtc *crtc,
args.v5.ucMiscInfo = 0; /* HDMI depth, etc. */
if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_REF_DIV_SRC;
- switch (bpc) {
- case 8:
- default:
- args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_24BPP;
- break;
- case 10:
- args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_30BPP;
- break;
+ if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
+ switch (bpc) {
+ case 8:
+ default:
+ args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_24BPP;
+ break;
+ case 10:
+ args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_30BPP;
+ break;
+ }
}
args.v5.ucTransmitterID = encoder_id;
args.v5.ucEncoderMode = encoder_mode;
@@ -852,20 +854,22 @@ static void atombios_crtc_program_pll(struct drm_crtc *crtc,
args.v6.ucMiscInfo = 0; /* HDMI depth, etc. */
if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_REF_DIV_SRC;
- switch (bpc) {
- case 8:
- default:
- args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_24BPP;
- break;
- case 10:
- args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_30BPP;
- break;
- case 12:
- args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_36BPP;
- break;
- case 16:
- args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_48BPP;
- break;
+ if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
+ switch (bpc) {
+ case 8:
+ default:
+ args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_24BPP;
+ break;
+ case 10:
+ args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_30BPP;
+ break;
+ case 12:
+ args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_36BPP;
+ break;
+ case 16:
+ args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_48BPP;
+ break;
+ }
}
args.v6.ucTransmitterID = encoder_id;
args.v6.ucEncoderMode = encoder_mode;
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index 475a275..286f1fa 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -1626,8 +1626,11 @@ atombios_set_encoder_crtc_source(struct drm_encoder *encoder)
args.v2.ucEncodeMode = ATOM_ENCODER_MODE_CRT;
else
args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
- } else
+ } else if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+ args.v2.ucEncodeMode = ATOM_ENCODER_MODE_LVDS;
+ } else {
args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
+ }
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index b101843..683cede 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1246,7 +1246,7 @@ bool radeon_connector_is_dp12_capable(struct drm_connector *connector)
struct radeon_device *rdev = dev->dev_private;

if (ASIC_IS_DCE5(rdev) &&
- (rdev->clock.dp_extclk >= 53900) &&
+ (rdev->clock.default_dispclk >= 53900) &&
radeon_connector_encoder_is_hbr2(connector)) {
return true;
}
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index cea482a..dc00155 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -529,8 +529,11 @@ int rs600_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
return -EINVAL;
}
addr = addr & 0xFFFFFFFFFFFFF000ULL;
- addr |= R600_PTE_VALID | R600_PTE_SYSTEM | R600_PTE_SNOOPED;
- addr |= R600_PTE_READABLE | R600_PTE_WRITEABLE;
+ if (addr == rdev->dummy_page.addr)
+ addr |= R600_PTE_SYSTEM | R600_PTE_SNOOPED;
+ else
+ addr |= (R600_PTE_VALID | R600_PTE_SYSTEM | R600_PTE_SNOOPED |
+ R600_PTE_READABLE | R600_PTE_WRITEABLE);
writeq(addr, ptr + (i * 8));
return 0;
}
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 9ac4389..64d79d2 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -754,7 +754,17 @@ struct hid_report *hid_validate_values(struct hid_device *hid,
* ->numbered being checked, which may not always be the case when
* drivers go to access report values.
*/
- report = hid->report_enum[type].report_id_hash[id];
+ if (id == 0) {
+ /*
+ * Validating on id 0 means we should examine the first
+ * report in the list.
+ */
+ report = list_entry(
+ hid->report_enum[type].report_list.next,
+ struct hid_report, list);
+ } else {
+ report = hid->report_enum[type].report_id_hash[id];
+ }
if (!report) {
hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
return NULL;
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 07db229..c685881 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -780,27 +780,19 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
{
struct ib_umad_port *port;
struct ib_umad_file *file;
- int ret;
+ int ret = -ENXIO;

port = container_of(inode->i_cdev, struct ib_umad_port, cdev);
- if (port)
- kref_get(&port->umad_dev->ref);
- else
- return -ENXIO;

mutex_lock(&port->file_mutex);

- if (!port->ib_dev) {
- ret = -ENXIO;
+ if (!port->ib_dev)
goto out;
- }

+ ret = -ENOMEM;
file = kzalloc(sizeof *file, GFP_KERNEL);
- if (!file) {
- kref_put(&port->umad_dev->ref, ib_umad_release_dev);
- ret = -ENOMEM;
+ if (!file)
goto out;
- }

mutex_init(&file->mutex);
spin_lock_init(&file->send_lock);
@@ -814,6 +806,13 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
list_add_tail(&file->port_list, &port->file_list);

ret = nonseekable_open(inode, filp);
+ if (ret) {
+ list_del(&file->port_list);
+ kfree(file);
+ goto out;
+ }
+
+ kref_get(&port->umad_dev->ref);

out:
mutex_unlock(&port->file_mutex);
@@ -880,10 +879,6 @@ static int ib_umad_sm_open(struct inode *inode, struct file *filp)
int ret;

port = container_of(inode->i_cdev, struct ib_umad_port, sm_cdev);
- if (port)
- kref_get(&port->umad_dev->ref);
- else
- return -ENXIO;

if (filp->f_flags & O_NONBLOCK) {
if (down_trylock(&port->sm_sem)) {
@@ -898,17 +893,27 @@ static int ib_umad_sm_open(struct inode *inode, struct file *filp)
}

ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
- if (ret) {
- up(&port->sm_sem);
- goto fail;
- }
+ if (ret)
+ goto err_up_sem;

filp->private_data = port;

- return nonseekable_open(inode, filp);
+ ret = nonseekable_open(inode, filp);
+ if (ret)
+ goto err_clr_sm_cap;
+
+ kref_get(&port->umad_dev->ref);
+
+ return 0;
+
+err_clr_sm_cap:
+ swap(props.set_port_cap_mask, props.clr_port_cap_mask);
+ ib_modify_port(port->ib_dev, port->port_num, 0, &props);
+
+err_up_sem:
+ up(&port->sm_sem);

fail:
- kref_put(&port->umad_dev->ref, ib_umad_release_dev);
return ret;
}

diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index 0f1607c..3bd6b69 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -843,7 +843,8 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries,
uresp.gts_key = ucontext->key;
ucontext->key += PAGE_SIZE;
spin_unlock(&ucontext->mmap_lock);
- ret = ib_copy_to_udata(udata, &uresp, sizeof uresp);
+ ret = ib_copy_to_udata(udata, &uresp,
+ sizeof(uresp) - sizeof(uresp.reserved));
if (ret)
goto err5;

diff --git a/drivers/infiniband/hw/cxgb4/user.h b/drivers/infiniband/hw/cxgb4/user.h
index e6669d5..06e8938 100644
--- a/drivers/infiniband/hw/cxgb4/user.h
+++ b/drivers/infiniband/hw/cxgb4/user.h
@@ -48,6 +48,7 @@ struct c4iw_create_cq_resp {
__u32 cqid;
__u32 size;
__u32 qid_mask;
+ __u32 reserved; /* explicit padding (optional for i386) */
};

diff --git a/drivers/infiniband/hw/ipath/ipath_diag.c b/drivers/infiniband/hw/ipath/ipath_diag.c
index e2f9a51..45802e9 100644
--- a/drivers/infiniband/hw/ipath/ipath_diag.c
+++ b/drivers/infiniband/hw/ipath/ipath_diag.c
@@ -346,6 +346,10 @@ static ssize_t ipath_diagpkt_write(struct file *fp,
ret = -EFAULT;
goto bail;
}
+ dp.len = odp.len;
+ dp.unit = odp.unit;
+ dp.data = odp.data;
+ dp.pbc_wd = 0;
} else {
ret = -EINVAL;
goto bail;
diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c
index 3b3745f..dd2ad6d3 100644
--- a/drivers/infiniband/hw/qib/qib_mad.c
+++ b/drivers/infiniband/hw/qib/qib_mad.c
@@ -1007,7 +1007,7 @@ static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)

event.event = IB_EVENT_PKEY_CHANGE;
event.device = &dd->verbs_dev.ibdev;
- event.element.port_num = 1;
+ event.element.port_num = port;
ib_dispatch_event(&event);
}
return 0;
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 4ec049d..8770d44 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1353,6 +1353,12 @@ err_unmap:
err_iu:
srp_put_tx_iu(target, iu, SRP_IU_CMD);

+ /*
+ * Avoid that the loops that iterate over the request ring can
+ * encounter a dangling SCSI command pointer.
+ */
+ req->scmnd = NULL;
+
spin_lock_irqsave(&target->lock, flags);
list_add(&req->list, &target->free_reqs);

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 342a059..70423dc 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -455,8 +455,15 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse,
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
- input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
- input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
+
+ /* For clickpads map both buttons to BTN_LEFT */
+ if (etd->fw_version & 0x001000) {
+ input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
+ } else {
+ input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
+ input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
+ }
+
input_report_abs(dev, ABS_PRESSURE, pres);
input_report_abs(dev, ABS_TOOL_WIDTH, width);

@@ -466,10 +473,17 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse,
static void elantech_input_sync_v4(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
+ struct elantech_data *etd = psmouse->private;
unsigned char *packet = psmouse->packet;

- input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
- input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
+ /* For clickpads map both buttons to BTN_LEFT */
+ if (etd->fw_version & 0x001000) {
+ input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
+ } else {
+ input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
+ input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
+ }
+
input_mt_report_pointer_emulation(dev, true);
input_sync(dev);
}
@@ -787,7 +801,7 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse)
if (etd->set_hw_resolution)
etd->reg_10 = 0x0b;
else
- etd->reg_10 = 0x03;
+ etd->reg_10 = 0x01;

if (elantech_write_reg(psmouse, 0x10, etd->reg_10))
rc = -1;
@@ -1211,7 +1225,8 @@ static int elantech_reconnect(struct psmouse *psmouse)
}

/*
- * Some hw_version 3 models go into error state when we try to set bit 3 of r10
+ * Some hw_version 3 models go into error state when we try to set
+ * bit 3 and/or bit 1 of r10.
*/
static const struct dmi_system_id no_hw_res_dmi_table[] = {
#if defined(CONFIG_DMI) && defined(CONFIG_X86)
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 8a39807..df8b72b 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -245,14 +245,6 @@ static int synaptics_resolution(struct psmouse *psmouse)
struct synaptics_data *priv = psmouse->private;
unsigned char resp[3];

- if (quirk_min_max) {
- priv->x_min = quirk_min_max[0];
- priv->x_max = quirk_min_max[1];
- priv->y_min = quirk_min_max[2];
- priv->y_max = quirk_min_max[3];
- return 0;
- }
-
if (SYN_ID_MAJOR(priv->identity) < 4)
return 0;

@@ -263,6 +255,14 @@ static int synaptics_resolution(struct psmouse *psmouse)
}
}

+ if (quirk_min_max) {
+ priv->x_min = quirk_min_max[0];
+ priv->x_max = quirk_min_max[1];
+ priv->y_min = quirk_min_max[2];
+ priv->y_max = quirk_min_max[3];
+ return 0;
+ }
+
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
@@ -1431,7 +1431,7 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T540"),
},
- .driver_data = (int []){1024, 5056, 2058, 4832},
+ .driver_data = (int []){1024, 5112, 2024, 4832},
},
{
/* Lenovo ThinkPad L540 */
@@ -1442,6 +1442,14 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = {
.driver_data = (int []){1024, 5112, 2024, 4832},
},
{
+ /* Lenovo ThinkPad W540 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W540"),
+ },
+ .driver_data = (int []){1024, 5112, 2024, 4832},
+ },
+ {
/* Lenovo Yoga S1 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 1a51b3d..bb1e579 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -4070,7 +4070,7 @@ static int intel_iommu_unmap(struct iommu_domain *domain,
{
struct dmar_domain *dmar_domain = domain->priv;
size_t size = PAGE_SIZE << gfp_order;
- int order;
+ int order, iommu_id;

order = dma_pte_clear_range(dmar_domain, iova >> VTD_PAGE_SHIFT,
(iova + size - 1) >> VTD_PAGE_SHIFT);
@@ -4078,6 +4078,22 @@ static int intel_iommu_unmap(struct iommu_domain *domain,
if (dmar_domain->max_addr == iova + size)
dmar_domain->max_addr = iova;

+ for_each_set_bit(iommu_id, &dmar_domain->iommu_bmp, g_num_of_iommus) {
+ struct intel_iommu *iommu = g_iommus[iommu_id];
+ int num, ndomains;
+
+ /*
+ * find bit position of dmar_domain
+ */
+ ndomains = cap_ndoms(iommu->cap);
+ for_each_set_bit(num, iommu->domain_ids, ndomains) {
+ if (iommu->domains[num] == dmar_domain)
+ iommu_flush_iotlb_psi(iommu, num,
+ iova >> VTD_PAGE_SHIFT,
+ 1 << order, 0);
+ }
+ }
+
return order;
}

diff --git a/drivers/md/md.c b/drivers/md/md.c
index db4b4a8..30a7b52 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7035,8 +7035,10 @@ void md_do_sync(struct mddev *mddev)
/* just incase thread restarts... */
if (test_bit(MD_RECOVERY_DONE, &mddev->recovery))
return;
- if (mddev->ro) /* never try to sync a read-only array */
+ if (mddev->ro) {/* never try to sync a read-only array */
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
return;
+ }

if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery))
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 94bbc85..b02adbc 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -1220,7 +1220,7 @@ static void mlx4_clear_steering(struct mlx4_dev *dev)
kfree(priv->steer);
}

-static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
+static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
{
struct mlx4_priv *priv;
struct mlx4_dev *dev;
@@ -1283,15 +1283,8 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
/* Allow large DMA segments, up to the firmware limit of 1 GB */
dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);

- priv = kzalloc(sizeof *priv, GFP_KERNEL);
- if (!priv) {
- dev_err(&pdev->dev, "Device struct alloc failed, "
- "aborting.\n");
- err = -ENOMEM;
- goto err_release_regions;
- }
-
- dev = &priv->dev;
+ dev = pci_get_drvdata(pdev);
+ priv = mlx4_priv(dev);
dev->pdev = pdev;
INIT_LIST_HEAD(&priv->ctx_list);
spin_lock_init(&priv->ctx_lock);
@@ -1362,7 +1355,7 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
mlx4_sense_init(dev);
mlx4_start_sense(dev);

- pci_set_drvdata(pdev, dev);
+ priv->removed = 0;

return 0;

@@ -1412,59 +1405,90 @@ err_disable_pdev:
static int __devinit mlx4_init_one(struct pci_dev *pdev,
const struct pci_device_id *id)
{
+ struct mlx4_priv *priv;
+ struct mlx4_dev *dev;
+
printk_once(KERN_INFO "%s", mlx4_version);

- return __mlx4_init_one(pdev, id);
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dev = &priv->dev;
+ pci_set_drvdata(pdev, dev);
+ priv->pci_dev_data = id->driver_data;
+
+ return __mlx4_init_one(pdev, id->driver_data);
}

-static void mlx4_remove_one(struct pci_dev *pdev)
+static void __mlx4_remove_one(struct pci_dev *pdev)
{
struct mlx4_dev *dev = pci_get_drvdata(pdev);
struct mlx4_priv *priv = mlx4_priv(dev);
+ int pci_dev_data;
int p;

- if (dev) {
- mlx4_stop_sense(dev);
- mlx4_unregister_device(dev);
+ if (priv->removed)
+ return;

- for (p = 1; p <= dev->caps.num_ports; p++) {
- mlx4_cleanup_port_info(&priv->port[p]);
- mlx4_CLOSE_PORT(dev, p);
- }
+ pci_dev_data = priv->pci_dev_data;

- mlx4_cleanup_counters_table(dev);
- mlx4_cleanup_mcg_table(dev);
- mlx4_cleanup_qp_table(dev);
- mlx4_cleanup_srq_table(dev);
- mlx4_cleanup_cq_table(dev);
- mlx4_cmd_use_polling(dev);
- mlx4_cleanup_eq_table(dev);
- mlx4_cleanup_mr_table(dev);
- mlx4_cleanup_xrcd_table(dev);
- mlx4_cleanup_pd_table(dev);
-
- iounmap(priv->kar);
- mlx4_uar_free(dev, &priv->driver_uar);
- mlx4_cleanup_uar_table(dev);
- mlx4_clear_steering(dev);
- mlx4_free_eq_table(dev);
- mlx4_close_hca(dev);
- mlx4_cmd_cleanup(dev);
-
- if (dev->flags & MLX4_FLAG_MSI_X)
- pci_disable_msix(pdev);
-
- kfree(priv);
- pci_release_regions(pdev);
- pci_disable_device(pdev);
- pci_set_drvdata(pdev, NULL);
+ mlx4_stop_sense(dev);
+ mlx4_unregister_device(dev);
+
+ for (p = 1; p <= dev->caps.num_ports; p++) {
+ mlx4_cleanup_port_info(&priv->port[p]);
+ mlx4_CLOSE_PORT(dev, p);
}
+
+ mlx4_cleanup_counters_table(dev);
+ mlx4_cleanup_mcg_table(dev);
+ mlx4_cleanup_qp_table(dev);
+ mlx4_cleanup_srq_table(dev);
+ mlx4_cleanup_cq_table(dev);
+ mlx4_cmd_use_polling(dev);
+ mlx4_cleanup_eq_table(dev);
+ mlx4_cleanup_mr_table(dev);
+ mlx4_cleanup_xrcd_table(dev);
+ mlx4_cleanup_pd_table(dev);
+
+ iounmap(priv->kar);
+ mlx4_uar_free(dev, &priv->driver_uar);
+ mlx4_cleanup_uar_table(dev);
+ mlx4_clear_steering(dev);
+ mlx4_free_eq_table(dev);
+ mlx4_close_hca(dev);
+ mlx4_cmd_cleanup(dev);
+
+ if (dev->flags & MLX4_FLAG_MSI_X)
+ pci_disable_msix(pdev);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ memset(priv, 0, sizeof(*priv));
+ priv->pci_dev_data = pci_dev_data;
+ priv->removed = 1;
+}
+
+static void mlx4_remove_one(struct pci_dev *pdev)
+{
+ struct mlx4_dev *dev = pci_get_drvdata(pdev);
+ struct mlx4_priv *priv = mlx4_priv(dev);
+
+ __mlx4_remove_one(pdev);
+ kfree(priv);
+ pci_set_drvdata(pdev, NULL);
}

int mlx4_restart_one(struct pci_dev *pdev)
{
- mlx4_remove_one(pdev);
- return __mlx4_init_one(pdev, NULL);
+ struct mlx4_dev *dev = pci_get_drvdata(pdev);
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ int pci_dev_data;
+
+ pci_dev_data = priv->pci_dev_data;
+ __mlx4_remove_one(pdev);
+ return __mlx4_init_one(pdev, pci_dev_data);
}

static DEFINE_PCI_DEVICE_TABLE(mlx4_pci_table) = {
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index 5dfa68f..169853d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -328,6 +328,9 @@ struct mlx4_priv {
struct list_head ctx_list;
spinlock_t ctx_lock;

+ int pci_dev_data;
+ int removed;
+
struct list_head pgdir_list;
struct mutex pgdir_mutex;

diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index c6c34bf..e8afd35 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -808,9 +808,13 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
break;
case B43_PHYTYPE_G:
status.band = IEEE80211_BAND_2GHZ;
- /* chanid is the radio channel cookie value as used
- * to tune the radio. */
- status.freq = chanid + 2400;
+ /* Somewhere between 478.104 and 508.1084 firmware for G-PHY
+ * has been modified to be compatible with N-PHY and others.
+ */
+ if (dev->fw.rev >= 508)
+ status.freq = ieee80211_channel_to_frequency(chanid, status.band);
+ else
+ status.freq = chanid + 2400;
break;
case B43_PHYTYPE_N:
case B43_PHYTYPE_LP:
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 1d4c579..ab19949 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -517,6 +517,8 @@ int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
crypto.cipher = rt2x00crypto_key_to_cipher(key);
if (crypto.cipher == CIPHER_NONE)
return -EOPNOTSUPP;
+ if (crypto.cipher == CIPHER_TKIP && rt2x00_is_usb(rt2x00dev))
+ return -EOPNOTSUPP;

crypto.cmd = cmd;

diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index 15406d5..feab697 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -36,6 +36,7 @@
#define AT91_RTC_EPOCH 1900UL /* just like arch/arm/common/rtctime.c */

static DECLARE_COMPLETION(at91_rtc_updated);
+static DECLARE_COMPLETION(at91_rtc_upd_rdy);
static unsigned int at91_alarm_year = AT91_RTC_EPOCH;

/*
@@ -97,6 +98,8 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm)
1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);

+ wait_for_completion(&at91_rtc_upd_rdy);
+
/* Stop Time/Calendar from counting */
cr = at91_sys_read(AT91_RTC_CR);
at91_sys_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM);
@@ -119,7 +122,9 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm)

/* Restart Time/Calendar */
cr = at91_sys_read(AT91_RTC_CR);
+ at91_sys_write(AT91_RTC_SCCR, AT91_RTC_SECEV);
at91_sys_write(AT91_RTC_CR, cr & ~(AT91_RTC_UPDCAL | AT91_RTC_UPDTIM));
+ at91_sys_write(AT91_RTC_IER, AT91_RTC_SECEV);

return 0;
}
@@ -226,8 +231,10 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id)
if (rtsr) { /* this interrupt is shared! Is it ours? */
if (rtsr & AT91_RTC_ALARM)
events |= (RTC_AF | RTC_IRQF);
- if (rtsr & AT91_RTC_SECEV)
- events |= (RTC_UF | RTC_IRQF);
+ if (rtsr & AT91_RTC_SECEV) {
+ complete(&at91_rtc_upd_rdy);
+ at91_sys_write(AT91_RTC_IDR, AT91_RTC_SECEV);
+ }
if (rtsr & AT91_RTC_ACKUPD)
complete(&at91_rtc_updated);

@@ -291,6 +298,11 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, rtc);

+ /* enable SECEV interrupt in order to initialize at91_rtc_upd_rdy
+ * completion.
+ */
+ at91_sys_write(AT91_RTC_IER, AT91_RTC_SECEV);
+
printk(KERN_INFO "AT91 Real Time Clock driver.\n");
return 0;
}
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index dd94c7d..049c22f 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1295,7 +1295,6 @@ struct megasas_instance {
u32 *reply_queue;
dma_addr_t reply_queue_h;

- unsigned long base_addr;
struct megasas_register_set __iomem *reg_set;

struct megasas_pd_list pd_list[MEGASAS_MAX_PD];
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index b018997..e45c865 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -3499,6 +3499,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
u32 max_sectors_1;
u32 max_sectors_2;
u32 tmp_sectors, msix_enable;
+ resource_size_t base_addr;
struct megasas_register_set __iomem *reg_set;
struct megasas_ctrl_info *ctrl_info;
unsigned long bar_list;
@@ -3507,14 +3508,14 @@ static int megasas_init_fw(struct megasas_instance *instance)
/* Find first memory bar */
bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
- instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
if (pci_request_selected_regions(instance->pdev, instance->bar,
"megasas: LSI")) {
printk(KERN_DEBUG "megasas: IO memory region busy!\n");
return -EBUSY;
}

- instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
+ base_addr = pci_resource_start(instance->pdev, instance->bar);
+ instance->reg_set = ioremap_nocache(base_addr, 8192);

if (!instance->reg_set) {
printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index c83571e..d2f8061 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -902,6 +902,15 @@ int scsi_eh_get_sense(struct list_head *work_q,
SCSI_SENSE_VALID(scmd))
continue;

+ if (status_byte(scmd->result) != CHECK_CONDITION)
+ /*
+ * don't request sense if there's no check condition
+ * status because the error we're processing isn't one
+ * that has a sense code (and some devices get
+ * confused by sense requests out of the blue)
+ */
+ continue;
+
SCSI_LOG_ERROR_RECOVERY(2, scmd_printk(KERN_INFO, scmd,
"%s: requesting sense\n",
current->comm));
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 6c4b620..cd4ac38 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -155,13 +155,14 @@ static int __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy)

/*
* Requeue this command. It will go before all other commands
- * that are already in the queue.
+ * that are already in the queue. Schedule requeue work under
+ * lock such that the kblockd_schedule_work() call happens
+ * before blk_cleanup_queue() finishes.
*/
spin_lock_irqsave(q->queue_lock, flags);
blk_requeue_request(q, cmd->request);
- spin_unlock_irqrestore(q->queue_lock, flags);
-
kblockd_schedule_work(q, &device->requeue_work);
+ spin_unlock_irqrestore(q->queue_lock, flags);

return 0;
}
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index c6c80c9..29f5751 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -332,6 +332,7 @@ static void scsi_target_destroy(struct scsi_target *starget)
struct Scsi_Host *shost = dev_to_shost(dev->parent);
unsigned long flags;

+ starget->state = STARGET_DEL;
transport_destroy_device(dev);
spin_lock_irqsave(shost->host_lock, flags);
if (shost->hostt->target_destroy)
@@ -383,6 +384,37 @@ static struct scsi_target *__scsi_find_target(struct device *parent,
}

/**
+ * scsi_target_reap_ref_release - remove target from visibility
+ * @kref: the reap_ref in the target being released
+ *
+ * Called on last put of reap_ref, which is the indication that no device
+ * under this target is visible anymore, so render the target invisible in
+ * sysfs. Note: we have to be in user context here because the target reaps
+ * should be done in places where the scsi device visibility is being removed.
+ */
+static void scsi_target_reap_ref_release(struct kref *kref)
+{
+ struct scsi_target *starget
+ = container_of(kref, struct scsi_target, reap_ref);
+
+ /*
+ * if we get here and the target is still in the CREATED state that
+ * means it was allocated but never made visible (because a scan
+ * turned up no LUNs), so don't call device_del() on it.
+ */
+ if (starget->state != STARGET_CREATED) {
+ transport_remove_device(&starget->dev);
+ device_del(&starget->dev);
+ }
+ scsi_target_destroy(starget);
+}
+
+static void scsi_target_reap_ref_put(struct scsi_target *starget)
+{
+ kref_put(&starget->reap_ref, scsi_target_reap_ref_release);
+}
+
+/**
* scsi_alloc_target - allocate a new or find an existing target
* @parent: parent of the target (need not be a scsi host)
* @channel: target channel number (zero if no channels)
@@ -404,7 +436,7 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
+ shost->transportt->target_size;
struct scsi_target *starget;
struct scsi_target *found_target;
- int error;
+ int error, ref_got;

starget = kzalloc(size, GFP_KERNEL);
if (!starget) {
@@ -413,7 +445,7 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
}
dev = &starget->dev;
device_initialize(dev);
- starget->reap_ref = 1;
+ kref_init(&starget->reap_ref);
dev->parent = get_device(parent);
dev_set_name(dev, "target%d:%d:%d", shost->host_no, channel, id);
dev->bus = &scsi_bus_type;
@@ -453,29 +485,36 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
return starget;

found:
- found_target->reap_ref++;
+ /*
+ * release routine already fired if kref is zero, so if we can still
+ * take the reference, the target must be alive. If we can't, it must
+ * be dying and we need to wait for a new target
+ */
+ ref_got = kref_get_unless_zero(&found_target->reap_ref);
+
spin_unlock_irqrestore(shost->host_lock, flags);
- if (found_target->state != STARGET_DEL) {
+ if (ref_got) {
put_device(dev);
return found_target;
}
- /* Unfortunately, we found a dying target; need to
- * wait until it's dead before we can get a new one */
+ /*
+ * Unfortunately, we found a dying target; need to wait until it's
+ * dead before we can get a new one. There is an anomaly here. We
+ * *should* call scsi_target_reap() to balance the kref_get() of the
+ * reap_ref above. However, since the target being released, it's
+ * already invisible and the reap_ref is irrelevant. If we call
+ * scsi_target_reap() we might spuriously do another device_del() on
+ * an already invisible target.
+ */
put_device(&found_target->dev);
- flush_scheduled_work();
+ /*
+ * length of time is irrelevant here, we just want to yield the CPU
+ * for a tick to avoid busy waiting for the target to die.
+ */
+ msleep(1);
goto retry;
}

-static void scsi_target_reap_usercontext(struct work_struct *work)
-{
- struct scsi_target *starget =
- container_of(work, struct scsi_target, ew.work);
-
- transport_remove_device(&starget->dev);
- device_del(&starget->dev);
- scsi_target_destroy(starget);
-}
-
/**
* scsi_target_reap - check to see if target is in use and destroy if not
* @starget: target to be checked
@@ -486,28 +525,13 @@ static void scsi_target_reap_usercontext(struct work_struct *work)
*/
void scsi_target_reap(struct scsi_target *starget)
{
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- unsigned long flags;
- enum scsi_target_state state;
- int empty = 0;
-
- spin_lock_irqsave(shost->host_lock, flags);
- state = starget->state;
- if (--starget->reap_ref == 0 && list_empty(&starget->devices)) {
- empty = 1;
- starget->state = STARGET_DEL;
- }
- spin_unlock_irqrestore(shost->host_lock, flags);
-
- if (!empty)
- return;
-
- BUG_ON(state == STARGET_DEL);
- if (state == STARGET_CREATED)
- scsi_target_destroy(starget);
- else
- execute_in_process_context(scsi_target_reap_usercontext,
- &starget->ew);
+ /*
+ * serious problem if this triggers: STARGET_DEL is only set in the if
+ * the reap_ref drops to zero, so we're trying to do another final put
+ * on an already released kref
+ */
+ BUG_ON(starget->state == STARGET_DEL);
+ scsi_target_reap_ref_put(starget);
}

/**
@@ -1532,6 +1556,10 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
}
mutex_unlock(&shost->scan_mutex);
scsi_autopm_put_target(starget);
+ /*
+ * paired with scsi_alloc_target(). Target will be destroyed unless
+ * scsi_probe_and_add_lun made an underlying device visible
+ */
scsi_target_reap(starget);
put_device(&starget->dev);

@@ -1612,8 +1640,10 @@ static void __scsi_scan_target(struct device *parent, unsigned int channel,

out_reap:
scsi_autopm_put_target(starget);
- /* now determine if the target has any children at all
- * and if not, nuke it */
+ /*
+ * paired with scsi_alloc_target(): determine if the target has
+ * any children at all and if not, nuke it
+ */
scsi_target_reap(starget);

put_device(&starget->dev);
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 72ca515..88bc82e 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -331,17 +331,14 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
{
struct scsi_device *sdev;
struct device *parent;
- struct scsi_target *starget;
struct list_head *this, *tmp;
unsigned long flags;

sdev = container_of(work, struct scsi_device, ew.work);

parent = sdev->sdev_gendev.parent;
- starget = to_scsi_target(parent);

spin_lock_irqsave(sdev->host->host_lock, flags);
- starget->reap_ref++;
list_del(&sdev->siblings);
list_del(&sdev->same_target_siblings);
list_del(&sdev->starved_entry);
@@ -361,8 +358,6 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
/* NULL queue means the device can't be used */
sdev->request_queue = NULL;

- scsi_target_reap(scsi_target(sdev));
-
kfree(sdev->inquiry);
kfree(sdev);

@@ -963,13 +958,27 @@ void __scsi_remove_device(struct scsi_device *sdev)
device_del(dev);
} else
put_device(&sdev->sdev_dev);
+
+ /*
+ * Stop accepting new requests and wait until all queuecommand() and
+ * scsi_run_queue() invocations have finished before tearing down the
+ * device.
+ */
scsi_device_set_state(sdev, SDEV_DEL);
+ blk_cleanup_queue(sdev->request_queue);
+ cancel_work_sync(&sdev->requeue_work);
+
if (sdev->host->hostt->slave_destroy)
sdev->host->hostt->slave_destroy(sdev);
transport_destroy_device(dev);

- /* Freeing the queue signals to block that we're done */
- blk_cleanup_queue(sdev->request_queue);
+ /*
+ * Paired with the kref_get() in scsi_sysfs_initialize(). We have
+ * remoed sysfs visibility from the device, so make the target
+ * invisible if this was the last device underneath it.
+ */
+ scsi_target_reap(scsi_target(sdev));
+
put_device(dev);
}

@@ -1032,7 +1041,7 @@ void scsi_remove_target(struct device *dev)
continue;
if (starget->dev.parent == dev || &starget->dev == dev) {
/* assuming new targets arrive at the end */
- starget->reap_ref++;
+ kref_get(&starget->reap_ref);
spin_unlock_irqrestore(shost->host_lock, flags);
if (last)
scsi_target_reap(last);
@@ -1116,6 +1125,12 @@ void scsi_sysfs_device_initialize(struct scsi_device *sdev)
list_add_tail(&sdev->same_target_siblings, &starget->devices);
list_add_tail(&sdev->siblings, &shost->__devices);
spin_unlock_irqrestore(shost->host_lock, flags);
+ /*
+ * device can now only be removed via __scsi_remove_device() so hold
+ * the target. Target will be held in CREATED state until something
+ * beneath it becomes visible (in which case it moves to RUNNING)
+ */
+ kref_get(&starget->reap_ref);
}

int scsi_is_sdev_device(const struct device *dev)
diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c
index 59e7378..32eb6b4 100644
--- a/drivers/target/iscsi/iscsi_target_auth.c
+++ b/drivers/target/iscsi/iscsi_target_auth.c
@@ -337,6 +337,16 @@ static int chap_server_compute_md5(
goto out;
}
/*
+ * During mutual authentication, the CHAP_C generated by the
+ * initiator must not match the original CHAP_C generated by
+ * the target.
+ */
+ if (!memcmp(challenge_binhex, chap->challenge, CHAP_CHALLENGE_LENGTH)) {
+ pr_err("initiator CHAP_C matches target CHAP_C, failing"
+ " login attempt\n");
+ goto out;
+ }
+ /*
* Generate CHAP_N and CHAP_R for mutual authentication.
*/
tfm = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 5def359..6993961 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -646,6 +646,7 @@ void core_dev_unexport(
spin_unlock(&dev->se_port_lock);

se_dev_stop(dev);
+ lun->lun_sep = NULL;
lun->lun_se_dev = NULL;
}

diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index 02e51fa..6c7886b 100644
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -179,7 +179,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
- 1;

for (j = 0; j < sg_per_table; j++) {
- pg = alloc_pages(GFP_KERNEL, 0);
+ pg = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
if (!pg) {
pr_err("Unable to allocate scatterlist"
" pages for struct rd_dev_sg_table\n");
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 320db2a..29e76be 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -72,13 +72,23 @@ static const struct tty_port_operations acm_port_ops = {
static int acm_ctrl_msg(struct acm *acm, int request, int value,
void *buf, int len)
{
- int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
+ int retval;
+
+ retval = usb_autopm_get_interface(acm->control);
+ if (retval)
+ return retval;
+
+ retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
request, USB_RT_ACM, value,
acm->control->altsetting[0].desc.bInterfaceNumber,
buf, len, 5000);
+
dev_dbg(&acm->control->dev,
"%s - rq 0x%02x, val %#x, len %#x, result %d\n",
__func__, request, value, len, retval);
+
+ usb_autopm_put_interface(acm->control);
+
return retval < 0 ? retval : 0;
}

@@ -181,14 +191,17 @@ static int acm_write_start(struct acm *acm, int wbn)

dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__,
acm->susp_count);
- usb_autopm_get_interface_async(acm->control);
+ rc = usb_autopm_get_interface_async(acm->control);
+ if (rc) {
+ wb->use = 0;
+ spin_unlock_irqrestore(&acm->write_lock, flags);
+ return rc;
+ }
+
if (acm->susp_count) {
- if (!acm->delayed_wb)
- acm->delayed_wb = wb;
- else
- usb_autopm_put_interface_async(acm->control);
+ usb_anchor_urb(wb->urb, &acm->delayed);
spin_unlock_irqrestore(&acm->write_lock, flags);
- return 0; /* A white lie */
+ return 0;
}
usb_mark_last_busy(acm->dev);

@@ -545,11 +558,23 @@ static void acm_tty_unregister(struct acm *acm)

static void acm_port_down(struct acm *acm)
{
+ struct urb *urb;
+ struct acm_wb *wb;
int i;

if (acm->dev) {
usb_autopm_get_interface(acm->control);
acm_set_control(acm, acm->ctrlout = 0);
+
+ for (;;) {
+ urb = usb_get_from_anchor(&acm->delayed);
+ if (!urb)
+ break;
+ wb = urb->context;
+ wb->use = 0;
+ usb_autopm_put_interface_async(acm->control);
+ }
+
usb_kill_urb(acm->ctrlurb);
for (i = 0; i < ACM_NW; i++)
usb_kill_urb(acm->wb[i].urb);
@@ -1112,6 +1137,7 @@ made_compressed_probe:
acm->bInterval = epread->bInterval;
tty_port_init(&acm->port);
acm->port.ops = &acm_port_ops;
+ init_usb_anchor(&acm->delayed);

buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
if (!buf) {
@@ -1338,18 +1364,15 @@ static int acm_suspend(struct usb_interface *intf, pm_message_t message)
struct acm *acm = usb_get_intfdata(intf);
int cnt;

+ spin_lock_irq(&acm->read_lock);
+ spin_lock(&acm->write_lock);
if (PMSG_IS_AUTO(message)) {
- int b;
-
- spin_lock_irq(&acm->write_lock);
- b = acm->transmitting;
- spin_unlock_irq(&acm->write_lock);
- if (b)
+ if (acm->transmitting) {
+ spin_unlock(&acm->write_lock);
+ spin_unlock_irq(&acm->read_lock);
return -EBUSY;
+ }
}
-
- spin_lock_irq(&acm->read_lock);
- spin_lock(&acm->write_lock);
cnt = acm->susp_count++;
spin_unlock(&acm->write_lock);
spin_unlock_irq(&acm->read_lock);
@@ -1372,30 +1395,25 @@ static int acm_suspend(struct usb_interface *intf, pm_message_t message)
static int acm_resume(struct usb_interface *intf)
{
struct acm *acm = usb_get_intfdata(intf);
- struct acm_wb *wb;
+ struct urb *urb;
int rv = 0;
- int cnt;

+ mutex_lock(&acm->mutex);
spin_lock_irq(&acm->read_lock);
- acm->susp_count -= 1;
- cnt = acm->susp_count;
- spin_unlock_irq(&acm->read_lock);
+ spin_lock(&acm->write_lock);

- if (cnt)
- return 0;
+ if (--acm->susp_count)
+ goto out;

- mutex_lock(&acm->mutex);
if (acm->port.count) {
- rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
-
- spin_lock_irq(&acm->write_lock);
- if (acm->delayed_wb) {
- wb = acm->delayed_wb;
- acm->delayed_wb = NULL;
- spin_unlock_irq(&acm->write_lock);
- acm_start_wb(acm, wb);
- } else {
- spin_unlock_irq(&acm->write_lock);
+ rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
+
+ for (;;) {
+ urb = usb_get_from_anchor(&acm->delayed);
+ if (!urb)
+ break;
+
+ acm_start_wb(acm, urb->context);
}

/*
@@ -1403,13 +1421,15 @@ static int acm_resume(struct usb_interface *intf)
* do the write path at all cost
*/
if (rv < 0)
- goto err_out;
+ goto out;

- rv = acm_submit_read_urbs(acm, GFP_NOIO);
+ rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
}
-
-err_out:
+out:
+ spin_unlock(&acm->write_lock);
+ spin_unlock_irq(&acm->read_lock);
mutex_unlock(&acm->mutex);
+
return rv;
}

diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index ca7937f..c3f1b36 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -116,7 +116,7 @@ struct acm {
unsigned int throttled:1; /* actually throttled */
unsigned int throttle_req:1; /* throttle requested */
u8 bInterval;
- struct acm_wb *delayed_wb; /* write queued for a device about to be woken */
+ struct usb_anchor delayed; /* writes queued for a device about to be woken */
};

#define CDC_DATA_INTERFACE_TYPE 0x0a
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 9f3003e..cc13abf 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1686,10 +1686,13 @@ int usb_runtime_suspend(struct device *dev)
if (status == -EAGAIN || status == -EBUSY)
usb_mark_last_busy(udev);

- /* The PM core reacts badly unless the return code is 0,
- * -EAGAIN, or -EBUSY, so always return -EBUSY on an error.
+ /*
+ * The PM core reacts badly unless the return code is 0,
+ * -EAGAIN, or -EBUSY, so always return -EBUSY on an error
+ * (except for root hubs, because they don't suspend through
+ * an upstream port like other USB devices).
*/
- if (status != 0)
+ if (status != 0 && udev->parent)
return -EBUSY;
return status;
}
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 7013165..12f3a37 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1370,14 +1370,24 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
desc = intf->cur_altsetting;
hdev = interface_to_usbdev(intf);

- /* Hubs have proper suspend/resume support. USB 3.0 device suspend is
+ /*
+ * Hubs have proper suspend/resume support, except for root hubs
+ * where the controller driver doesn't have bus_suspend and
+ * bus_resume methods. Also, USB 3.0 device suspend is
* different from USB 2.0/1.1 device suspend, and unfortunately we
* don't support it yet. So leave autosuspend disabled for USB 3.0
* external hubs for now. Enable autosuspend for USB 3.0 roothubs,
* since that isn't a "real" hub.
*/
- if (!hub_is_superspeed(hdev) || !hdev->parent)
- usb_enable_autosuspend(hdev);
+ if (hdev->parent) { /* normal device */
+ if (!hub_is_superspeed(hdev))
+ usb_enable_autosuspend(hdev);
+ } else { /* root hub */
+ const struct hc_driver *drv = bus_to_hcd(hdev->bus)->driver;
+
+ if (drv->bus_suspend && drv->bus_resume)
+ usb_enable_autosuspend(hdev);
+ }

if (hdev->level == MAX_TOPO_LEVEL) {
dev_err(&intf->dev,
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index c7cfbce..eae35c1 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -555,6 +555,14 @@ static const struct dmi_system_id __devinitconst ehci_dmi_nohandoff_table[] = {
DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"),
},
},
+ {
+ /* HASEE E200 */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "HASEE"),
+ DMI_MATCH(DMI_BOARD_NAME, "E210"),
+ DMI_MATCH(DMI_BIOS_VERSION, "6.00"),
+ },
+ },
{ }
};

@@ -564,9 +572,14 @@ static void __devinit ehci_bios_handoff(struct pci_dev *pdev,
{
int try_handoff = 1, tried_handoff = 0;

- /* The Pegatron Lucid tablet sporadically waits for 98 seconds trying
- * the handoff on its unused controller. Skip it. */
- if (pdev->vendor == 0x8086 && pdev->device == 0x283a) {
+ /*
+ * The Pegatron Lucid tablet sporadically waits for 98 seconds trying
+ * the handoff on its unused controller. Skip it.
+ *
+ * The HASEE E200 hangs when the semaphore is set (bugzilla #77021).
+ */
+ if (pdev->vendor == 0x8086 && (pdev->device == 0x283a ||
+ pdev->device == 0x27cc)) {
if (dmi_check_system(ehci_dmi_nohandoff_table))
try_handoff = 0;
}
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index ec73541..74922b9 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1722,6 +1722,16 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
kfree(cur_cd);
}

+ num_ports = HCS_MAX_PORTS(xhci->hcs_params1);
+ for (i = 0; i < num_ports; i++) {
+ struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table;
+ for (j = 0; j < XHCI_MAX_INTERVAL; j++) {
+ struct list_head *ep = &bwt->interval_bw[j].endpoints;
+ while (!list_empty(ep))
+ list_del_init(ep->next);
+ }
+ }
+
for (i = 1; i < MAX_HC_SLOTS; ++i)
xhci_free_virt_device(xhci, i);

@@ -1762,16 +1772,6 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
if (!xhci->rh_bw)
goto no_bw;

- num_ports = HCS_MAX_PORTS(xhci->hcs_params1);
- for (i = 0; i < num_ports; i++) {
- struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table;
- for (j = 0; j < XHCI_MAX_INTERVAL; j++) {
- struct list_head *ep = &bwt->interval_bw[j].endpoints;
- while (!list_empty(ep))
- list_del_init(ep->next);
- }
- }
-
for (i = 0; i < num_ports; i++) {
struct xhci_tt_bw_info *tt, *n;
list_for_each_entry_safe(tt, n, &xhci->rh_bw[i].tts, tt_list) {
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index b9ac9a3..2a38a17 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1132,6 +1132,11 @@ static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
urb->context = &completion;
urb->complete = unlink1_callback;

+ if (usb_pipeout(urb->pipe)) {
+ simple_fill_buf(urb);
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ }
+
/* keep the endpoint busy. there are lots of hc/hcd-internal
* states, and testing should get to all of them over time.
*
@@ -1262,6 +1267,11 @@ static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
unlink_queued_callback, &ctx);
ctx.urbs[i]->transfer_dma = buf_dma;
ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
+
+ if (usb_pipeout(ctx.urbs[i]->pipe)) {
+ simple_fill_buf(ctx.urbs[i]);
+ ctx.urbs[i]->transfer_flags |= URB_ZERO_PACKET;
+ }
}

/* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 332f04d..6e08639 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -591,6 +591,8 @@ static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(FTDI_VID, FTDI_TAVIR_STK500_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_TIAO_UMPA_PID),
.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+ { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLXM_PID),
+ .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
/*
* ELV devices:
*/
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 83a440f..677cf49 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -538,6 +538,11 @@
*/
#define FTDI_TIAO_UMPA_PID 0x8a98 /* TIAO/DIYGADGET USB Multi-Protocol Adapter */

+/*
+ * NovaTech product ids (FTDI_VID)
+ */
+#define FTDI_NT_ORIONLXM_PID 0x7c90 /* OrionLXm Substation Automation Platform */
+

/********************************/
/** third-party VID/PID combos **/
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index c575e0a..438138f 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -923,7 +923,7 @@ static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;

i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
- i2c_header->Size = (__u16)buffer_size;
+ i2c_header->Size = cpu_to_le16(buffer_size);
i2c_header->CheckSum = cs;
firmware_rec->Ver_Major = OperationalMajorVersion;
firmware_rec->Ver_Minor = OperationalMinorVersion;
diff --git a/drivers/usb/serial/io_usbvend.h b/drivers/usb/serial/io_usbvend.h
index 51f83fb..6f6a856 100644
--- a/drivers/usb/serial/io_usbvend.h
+++ b/drivers/usb/serial/io_usbvend.h
@@ -594,7 +594,7 @@ struct edge_boot_descriptor {

struct ti_i2c_desc {
__u8 Type; // Type of descriptor
- __u16 Size; // Size of data only not including header
+ __le16 Size; // Size of data only not including header
__u8 CheckSum; // Checksum (8 bit sum of data only)
__u8 Data[0]; // Data starts here
} __attribute__((packed));
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 9823e79..a0f47d5 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -161,6 +161,7 @@ static void option_instat_callback(struct urb *urb);
#define NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_FULLSPEED 0x9000
#define NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_HIGHSPEED 0x9001
#define NOVATELWIRELESS_PRODUCT_E362 0x9010
+#define NOVATELWIRELESS_PRODUCT_E371 0x9011
#define NOVATELWIRELESS_PRODUCT_G2 0xA010
#define NOVATELWIRELESS_PRODUCT_MC551 0xB001

@@ -1025,6 +1026,7 @@ static const struct usb_device_id option_ids[] = {
/* Novatel Ovation MC551 a.k.a. Verizon USB551L */
{ USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC551, 0xff, 0xff, 0xff) },
{ USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_E362, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_E371, 0xff, 0xff, 0xff) },

{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01) },
{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01A) },
@@ -1955,6 +1957,7 @@ static int option_send_setup(struct usb_serial_port *port)
struct usb_wwan_port_private *portdata;
int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
int val = 0;
+ int res;
dbg("%s", __func__);

if (is_blacklisted(ifNum, OPTION_BLACKLIST_SENDSETUP,
@@ -1970,9 +1973,16 @@ static int option_send_setup(struct usb_serial_port *port)
if (portdata->rts_state)
val |= 0x02;

- return usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
+ res = usb_autopm_get_interface(serial->interface);
+ if (res)
+ return res;
+
+ res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT);
+
+ usb_autopm_put_interface(serial->interface);
+
+ return res;
}

MODULE_AUTHOR(DRIVER_AUTHOR);
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index dbdfeb4..0d26ab6 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -59,6 +59,7 @@ struct sierra_intf_private {
spinlock_t susp_lock;
unsigned int suspended:1;
int in_flight;
+ unsigned int open_ports;
};

static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
@@ -802,6 +803,7 @@ static void sierra_close(struct usb_serial_port *port)
struct usb_serial *serial = port->serial;
struct sierra_port_private *portdata;
struct sierra_intf_private *intfdata = port->serial->private;
+ struct urb *urb;

dev_dbg(&port->dev, "%s\n", __func__);
@@ -813,7 +815,6 @@ static void sierra_close(struct usb_serial_port *port)
if (serial->dev) {
mutex_lock(&serial->disc_mutex);
if (!serial->disconnected) {
- serial->interface->needs_remote_wakeup = 0;
/* odd error handling due to pm counters */
if (!usb_autopm_get_interface(serial->interface))
sierra_send_setup(port);
@@ -824,8 +825,21 @@ static void sierra_close(struct usb_serial_port *port)
mutex_unlock(&serial->disc_mutex);
spin_lock_irq(&intfdata->susp_lock);
portdata->opened = 0;
+ if (--intfdata->open_ports == 0)
+ serial->interface->needs_remote_wakeup = 0;
spin_unlock_irq(&intfdata->susp_lock);

+ for (;;) {
+ urb = usb_get_from_anchor(&portdata->delayed);
+ if (!urb)
+ break;
+ kfree(urb->transfer_buffer);
+ usb_free_urb(urb);
+ usb_autopm_put_interface_async(serial->interface);
+ spin_lock(&portdata->lock);
+ portdata->outstanding_urbs--;
+ spin_unlock(&portdata->lock);
+ }

/* Stop reading urbs */
sierra_stop_rx_urbs(port);
@@ -868,23 +882,29 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);

err = sierra_submit_rx_urbs(port, GFP_KERNEL);
- if (err) {
- /* get rid of everything as in close */
- sierra_close(port);
- /* restore balance for autopm */
- if (!serial->disconnected)
- usb_autopm_put_interface(serial->interface);
- return err;
- }
+ if (err)
+ goto err_submit;
+
sierra_send_setup(port);

- serial->interface->needs_remote_wakeup = 1;
spin_lock_irq(&intfdata->susp_lock);
portdata->opened = 1;
+ if (++intfdata->open_ports == 1)
+ serial->interface->needs_remote_wakeup = 1;
spin_unlock_irq(&intfdata->susp_lock);
usb_autopm_put_interface(serial->interface);

return 0;
+
+err_submit:
+ sierra_stop_rx_urbs(port);
+
+ for (i = 0; i < portdata->num_in_urbs; i++) {
+ sierra_release_urb(portdata->in_urbs[i]);
+ portdata->in_urbs[i] = NULL;
+ }
+
+ return err;
}

@@ -1060,8 +1080,12 @@ static int sierra_resume(struct usb_serial *serial)
if (err < 0) {
intfdata->in_flight--;
usb_unanchor_urb(urb);
- usb_scuttle_anchored_urbs(&portdata->delayed);
- break;
+ kfree(urb->transfer_buffer);
+ usb_free_urb(urb);
+ spin_lock(&portdata->lock);
+ portdata->outstanding_urbs--;
+ spin_unlock(&portdata->lock);
+ continue;
}
}

diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 6c92301..b38994e 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -236,8 +236,10 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
usb_pipeendpoint(this_urb->pipe), i);

err = usb_autopm_get_interface_async(port->serial->interface);
- if (err < 0)
+ if (err < 0) {
+ clear_bit(i, &portdata->out_busy);
break;
+ }

/* send the data */
memcpy(this_urb->transfer_buffer, buf, todo);
@@ -432,12 +434,26 @@ int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port)
}
EXPORT_SYMBOL(usb_wwan_open);

+static void unbusy_queued_urb(struct urb *urb,
+ struct usb_wwan_port_private *portdata)
+{
+ int i;
+
+ for (i = 0; i < N_OUT_URB; i++) {
+ if (urb == portdata->out_urbs[i]) {
+ clear_bit(i, &portdata->out_busy);
+ break;
+ }
+ }
+}
+
void usb_wwan_close(struct usb_serial_port *port)
{
int i;
struct usb_serial *serial = port->serial;
struct usb_wwan_port_private *portdata;
struct usb_wwan_intf_private *intfdata = port->serial->private;
+ struct urb *urb;

dbg("%s", __func__);
portdata = usb_get_serial_port_data(port);
@@ -448,6 +464,14 @@ void usb_wwan_close(struct usb_serial_port *port)
portdata->opened = 0;
spin_unlock_irq(&intfdata->susp_lock);

+ for (;;) {
+ urb = usb_get_from_anchor(&portdata->delayed);
+ if (!urb)
+ break;
+ unbusy_queued_urb(urb, portdata);
+ usb_autopm_put_interface_async(serial->interface);
+ }
+
for (i = 0; i < N_IN_URB; i++)
usb_kill_urb(portdata->in_urbs[i]);
for (i = 0; i < N_OUT_URB; i++)
@@ -645,46 +669,31 @@ EXPORT_SYMBOL(usb_wwan_release);
int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message)
{
struct usb_wwan_intf_private *intfdata = serial->private;
- int b;

dbg("%s entered", __func__);

+ spin_lock_irq(&intfdata->susp_lock);
if (PMSG_IS_AUTO(message)) {
- spin_lock_irq(&intfdata->susp_lock);
- b = intfdata->in_flight;
- spin_unlock_irq(&intfdata->susp_lock);
-
- if (b)
+ if (intfdata->in_flight) {
+ spin_unlock_irq(&intfdata->susp_lock);
return -EBUSY;
+ }
}
-
- spin_lock_irq(&intfdata->susp_lock);
intfdata->suspended = 1;
spin_unlock_irq(&intfdata->susp_lock);
+
stop_read_write_urbs(serial);

return 0;
}
EXPORT_SYMBOL(usb_wwan_suspend);

-static void unbusy_queued_urb(struct urb *urb, struct usb_wwan_port_private *portdata)
-{
- int i;
-
- for (i = 0; i < N_OUT_URB; i++) {
- if (urb == portdata->out_urbs[i]) {
- clear_bit(i, &portdata->out_busy);
- break;
- }
- }
-}
-
-static void play_delayed(struct usb_serial_port *port)
+static int play_delayed(struct usb_serial_port *port)
{
struct usb_wwan_intf_private *data;
struct usb_wwan_port_private *portdata;
struct urb *urb;
- int err;
+ int err = 0;

portdata = usb_get_serial_port_data(port);
data = port->serial->private;
@@ -701,6 +710,8 @@ static void play_delayed(struct usb_serial_port *port)
break;
}
}
+
+ return err;
}

int usb_wwan_resume(struct usb_serial *serial)
@@ -710,7 +721,8 @@ int usb_wwan_resume(struct usb_serial *serial)
struct usb_wwan_intf_private *intfdata = serial->private;
struct usb_wwan_port_private *portdata;
struct urb *urb;
- int err = 0;
+ int err;
+ int err_count = 0;

dbg("%s entered", __func__);
/* get the interrupt URBs resubmitted unconditionally */
@@ -725,21 +737,23 @@ int usb_wwan_resume(struct usb_serial *serial)
if (err < 0) {
err("%s: Error %d for interrupt URB of port%d",
__func__, err, i);
- goto err_out;
+ err_count++;
}
}

+ spin_lock_irq(&intfdata->susp_lock);
for (i = 0; i < serial->num_ports; i++) {
/* walk all ports */
port = serial->port[i];
portdata = usb_get_serial_port_data(port);

/* skip closed ports */
- spin_lock_irq(&intfdata->susp_lock);
- if (!portdata->opened) {
- spin_unlock_irq(&intfdata->susp_lock);
+ if (!portdata->opened)
continue;
- }
+
+ err = play_delayed(port);
+ if (err)
+ err_count++;

for (j = 0; j < N_IN_URB; j++) {
urb = portdata->in_urbs[j];
@@ -747,18 +761,17 @@ int usb_wwan_resume(struct usb_serial *serial)
if (err < 0) {
err("%s: Error %d for bulk URB %d",
__func__, err, i);
- spin_unlock_irq(&intfdata->susp_lock);
- goto err_out;
+ err_count++;
}
}
- play_delayed(port);
- spin_unlock_irq(&intfdata->susp_lock);
}
- spin_lock_irq(&intfdata->susp_lock);
intfdata->suspended = 0;
spin_unlock_irq(&intfdata->susp_lock);
-err_out:
- return err;
+
+ if (err_count)
+ return -EIO;
+
+ return 0;
}
EXPORT_SYMBOL(usb_wwan_resume);
#endif
diff --git a/drivers/video/matrox/matroxfb_base.h b/drivers/video/matrox/matroxfb_base.h
index 556d96c..89a8a89a 100644
--- a/drivers/video/matrox/matroxfb_base.h
+++ b/drivers/video/matrox/matroxfb_base.h
@@ -698,7 +698,7 @@ void matroxfb_unregister_driver(struct matroxfb_driver* drv);

#define mga_fifo(n) do {} while ((mga_inl(M_FIFOSTATUS) & 0xFF) < (n))

-#define WaitTillIdle() do {} while (mga_inl(M_STATUS) & 0x10000)
+#define WaitTillIdle() do { mga_inl(M_STATUS); do {} while (mga_inl(M_STATUS) & 0x10000); } while (0)

/* code speedup */
#ifdef CONFIG_FB_MATROX_MILLENIUM
diff --git a/drivers/watchdog/ath79_wdt.c b/drivers/watchdog/ath79_wdt.c
index 725c84b..d256ca7 100644
--- a/drivers/watchdog/ath79_wdt.c
+++ b/drivers/watchdog/ath79_wdt.c
@@ -18,6 +18,7 @@
*/

#include <linux/bitops.h>
+#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/init.h>
@@ -73,6 +74,15 @@ static inline void ath79_wdt_keepalive(void)
static inline void ath79_wdt_enable(void)
{
ath79_wdt_keepalive();
+
+ /*
+ * Updating the TIMER register requires a few microseconds
+ * on the AR934x SoCs at least. Use a small delay to ensure
+ * that the TIMER register is updated within the hardware
+ * before enabling the watchdog.
+ */
+ udelay(2);
+
ath79_reset_wr(AR71XX_RESET_REG_WDOG_CTRL, WDOG_CTRL_ACTION_FCR);
}

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 73e4cbc..05937a8 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1523,6 +1523,7 @@ again:
* shortening the size of the delalloc range we're searching
*/
free_extent_state(cached_state);
+ cached_state = NULL;
if (!loops) {
unsigned long offset = (*start) & (PAGE_CACHE_SIZE - 1);
max_bytes = PAGE_CACHE_SIZE - offset;
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 81feb17..7168eeb 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3067,7 +3067,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
}
BUG_ON(start + size <= ac->ac_o_ex.fe_logical &&
start > ac->ac_o_ex.fe_logical);
- BUG_ON(size <= 0 || size > EXT4_CLUSTERS_PER_GROUP(ac->ac_sb));
+ BUG_ON(size <= 0 || size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));

/* now prepare goal request */

diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index b46a675..dc72ebf 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -386,24 +386,24 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
set_page_writeback(page);
ClearPageError(page);

+ /*
+ * Comments copied from block_write_full_page_endio:
+ *
+ * The page straddles i_size. It must be zeroed out on each and every
+ * writepage invocation because it may be mmapped. "A file is mapped
+ * in multiples of the page size. For a file that is not a multiple of
+ * the page size, the remaining memory is zeroed when mapped, and
+ * writes to that region are not written out to the file."
+ */
+ if (len < PAGE_CACHE_SIZE)
+ zero_user_segment(page, len, PAGE_CACHE_SIZE);
+
for (bh = head = page_buffers(page), block_start = 0;
bh != head || !block_start;
block_start = block_end, bh = bh->b_this_page) {

block_end = block_start + blocksize;
if (block_start >= len) {
- /*
- * Comments copied from block_write_full_page_endio:
- *
- * The page straddles i_size. It must be zeroed out on
- * each and every writepage invocation because it may
- * be mmapped. "A file is mapped in multiples of the
- * page size. For a file that is not a multiple of
- * the page size, the remaining memory is zeroed when
- * mapped, and writes to that region are not written
- * out to the file."
- */
- zero_user_segment(page, block_start, block_end);
clear_buffer_dirty(bh);
set_buffer_uptodate(bh);
continue;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b2e0a55..6e91f8b 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -337,13 +337,22 @@ static void unhash_stid(struct nfs4_stid *s)
idr_remove(stateids, s->sc_stateid.si_opaque.so_id);
}

+static void
+hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
+{
+ lockdep_assert_held(&recall_lock);
+
+ list_add(&dp->dl_perfile, &fp->fi_delegations);
+ list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
+}
+
/* Called under the state lock. */
static void
unhash_delegation(struct nfs4_delegation *dp)
{
unhash_stid(&dp->dl_stid);
- list_del_init(&dp->dl_perclnt);
spin_lock(&recall_lock);
+ list_del_init(&dp->dl_perclnt);
list_del_init(&dp->dl_perfile);
list_del_init(&dp->dl_recall_lru);
spin_unlock(&recall_lock);
@@ -2810,10 +2819,8 @@ static int nfs4_setlease(struct nfs4_delegation *dp, int flag)
if (!fl)
return -ENOMEM;
fl->fl_file = find_readable_file(fp);
- list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
status = vfs_setlease(fl->fl_file, fl->fl_type, &fl);
if (status) {
- list_del_init(&dp->dl_perclnt);
locks_free_lock(fl);
return -ENOMEM;
}
@@ -2821,7 +2828,9 @@ static int nfs4_setlease(struct nfs4_delegation *dp, int flag)
fp->fi_deleg_file = fl->fl_file;
get_file(fp->fi_deleg_file);
atomic_set(&fp->fi_delegees, 1);
- list_add(&dp->dl_perfile, &fp->fi_delegations);
+ spin_lock(&recall_lock);
+ hash_delegation_locked(dp, fp);
+ spin_unlock(&recall_lock);
return 0;
}

@@ -2837,9 +2846,8 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag)
return -EAGAIN;
}
atomic_inc(&fp->fi_delegees);
- list_add(&dp->dl_perfile, &fp->fi_delegations);
+ hash_delegation_locked(dp, fp);
spin_unlock(&recall_lock);
- list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
return 0;
}

@@ -3385,7 +3393,7 @@ nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp)
* correspondance, and we have to delete the lockowner when we
* delete the lock stateid:
*/
- unhash_lockowner(lo);
+ release_lockowner(lo);
return nfs_ok;
}

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 4835b90..a7933dd 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2035,8 +2035,8 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
if (err)
goto out_nfserr;
- if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
- FATTR4_WORD0_MAXNAME)) ||
+ if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE |
+ FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) ||
(bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
FATTR4_WORD1_SPACE_TOTAL))) {
err = vfs_statfs(&path, &statfs);
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index ace6350..f011185 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -126,7 +126,7 @@ static int reiserfs_file_open(struct inode *inode, struct file *file)
return err;
}

-static void reiserfs_vfs_truncate_file(struct inode *inode)
+void reiserfs_vfs_truncate_file(struct inode *inode)
{
mutex_lock(&(REISERFS_I(inode)->tailpack));
reiserfs_truncate_file(inode, 1);
@@ -312,7 +312,6 @@ const struct file_operations reiserfs_file_operations = {
};

const struct inode_operations reiserfs_file_inode_operations = {
- .truncate = reiserfs_vfs_truncate_file,
.setattr = reiserfs_setattr,
.setxattr = reiserfs_setxattr,
.getxattr = reiserfs_getxattr,
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index fe677c0..fcb07e5 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -3091,8 +3091,10 @@ static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb,
loff_t isize = i_size_read(inode);
loff_t end = offset + iov_length(iov, nr_segs);

- if (end > isize)
- vmtruncate(inode, isize);
+ if ((end > isize) && inode_newsize_ok(inode, isize) == 0) {
+ truncate_setsize(inode, isize);
+ reiserfs_vfs_truncate_file(inode);
+ }
}

return ret;
@@ -3206,8 +3208,19 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
*/
reiserfs_write_unlock_once(inode->i_sb, depth);
if ((attr->ia_valid & ATTR_SIZE) &&
- attr->ia_size != i_size_read(inode))
- error = vmtruncate(inode, attr->ia_size);
+ attr->ia_size != i_size_read(inode)) {
+ error = inode_newsize_ok(inode, attr->ia_size);
+ if (!error) {
+ /*
+ * Could race against reiserfs_file_release
+ * if called from NFS, so take tailpack mutex.
+ */
+ mutex_lock(&REISERFS_I(inode)->tailpack);
+ truncate_setsize(inode, attr->ia_size);
+ reiserfs_truncate_file(inode, 1);
+ mutex_unlock(&REISERFS_I(inode)->tailpack);
+ }
+ }

if (!error) {
setattr_copy(inode, attr);
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index f9c234b..6589006 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1522,8 +1522,7 @@ static int ubifs_vm_page_mkwrite(struct vm_area_struct *vma,
ubifs_release_dirty_inode_budget(c, ui);
}

- unlock_page(page);
- return 0;
+ return VM_FAULT_LOCKED;

out_unlock:
unlock_page(page);
diff --git a/fs/ubifs/shrinker.c b/fs/ubifs/shrinker.c
index 9e1d056..e0a7a76 100644
--- a/fs/ubifs/shrinker.c
+++ b/fs/ubifs/shrinker.c
@@ -128,7 +128,6 @@ static int shrink_tnc(struct ubifs_info *c, int nr, int age, int *contention)
freed = ubifs_destroy_tnc_subtree(znode);
atomic_long_sub(freed, &ubifs_clean_zn_cnt);
atomic_long_sub(freed, &c->clean_zn_cnt);
- ubifs_assert(atomic_long_read(&c->clean_zn_cnt) >= 0);
total_freed += freed;
znode = zprev;
}
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index f1e2527..e2e1ab5 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -27,6 +27,8 @@ struct module;
* @irq_count: stats field to detect stalled irqs
* @last_unhandled: aging timer for unhandled count
* @irqs_unhandled: stats field for spurious unhandled interrupts
+ * @threads_handled: stats field for deferred spurious detection of threaded handlers
+ * @threads_handled_last: comparator field for deferred spurious detection of theraded handlers
* @lock: locking for SMP
* @affinity_hint: hint to user space for preferred irq affinity
* @affinity_notify: context for notification of affinity changes
@@ -53,6 +55,8 @@ struct irq_desc {
unsigned int irq_count; /* For detecting broken IRQs */
unsigned long last_unhandled; /* Aging timer for unhandled count */
unsigned int irqs_unhandled;
+ atomic_t threads_handled;
+ int threads_handled_last;
raw_spinlock_t lock;
struct cpumask *percpu_enabled;
#ifdef CONFIG_SMP
diff --git a/include/linux/lzo.h b/include/linux/lzo.h
index d793497..a0848d9 100644
--- a/include/linux/lzo.h
+++ b/include/linux/lzo.h
@@ -4,28 +4,28 @@
* LZO Public Kernel Interface
* A mini subset of the LZO real-time data compression library
*
- * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
+ * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
*
* The full LZO package can be found at:
* http://www.oberhumer.com/opensource/lzo/
*
- * Changed for kernel use by:
+ * Changed for Linux kernel use by:
* Nitin Gupta <nitingupta910@xxxxxxxxx>
* Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
*/

-#define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *))
-#define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS
+#define LZO1X_1_MEM_COMPRESS (8192 * sizeof(unsigned short))
+#define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS

#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3)

-/* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */
+/* This requires 'wrkmem' of size LZO1X_1_MEM_COMPRESS */
int lzo1x_1_compress(const unsigned char *src, size_t src_len,
- unsigned char *dst, size_t *dst_len, void *wrkmem);
+ unsigned char *dst, size_t *dst_len, void *wrkmem);

/* safe decompression with overrun testing */
int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
- unsigned char *dst, size_t *dst_len);
+ unsigned char *dst, size_t *dst_len);

/*
* Return values (< 0 = Error)
@@ -40,5 +40,6 @@ int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
#define LZO_E_EOF_NOT_FOUND (-7)
#define LZO_E_INPUT_NOT_CONSUMED (-8)
#define LZO_E_NOT_YET_IMPLEMENTED (-9)
+#define LZO_E_INVALID_ARGUMENT (-10)

#endif
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 800f113..e49240b 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -112,6 +112,7 @@

#include <linux/compiler.h> /* For unlikely. */
#include <linux/sched.h> /* For struct task_struct. */
+#include <linux/pid_namespace.h> /* For task_active_pid_ns. */

extern long arch_ptrace(struct task_struct *child, long request,
@@ -204,6 +205,37 @@ static inline void ptrace_event(int event, unsigned long message)
}

/**
+ * ptrace_event_pid - possibly stop for a ptrace event notification
+ * @event: %PTRACE_EVENT_* value to report
+ * @pid: process identifier for %PTRACE_GETEVENTMSG to return
+ *
+ * Check whether @event is enabled and, if so, report @event and @pid
+ * to the ptrace parent. @pid is reported as the pid_t seen from the
+ * the ptrace parent's pid namespace.
+ *
+ * Called without locks.
+ */
+static inline void ptrace_event_pid(int event, struct pid *pid)
+{
+ /*
+ * FIXME: There's a potential race if a ptracer in a different pid
+ * namespace than parent attaches between computing message below and
+ * when we acquire tasklist_lock in ptrace_stop(). If this happens,
+ * the ptracer will get a bogus pid from PTRACE_GETEVENTMSG.
+ */
+ unsigned long message = 0;
+ struct pid_namespace *ns;
+
+ rcu_read_lock();
+ ns = task_active_pid_ns(rcu_dereference(current->parent));
+ if (ns)
+ message = pid_nr_ns(pid, ns);
+ rcu_read_unlock();
+
+ ptrace_event(event, message);
+}
+
+/**
* ptrace_init_task - initialize ptrace state for a new child
* @child: new child task
* @ptrace: true if child should be ptrace'd by parent's tracer
@@ -371,6 +403,9 @@ static inline void user_single_step_siginfo(struct task_struct *tsk,
* calling arch_ptrace_stop() when it would be superfluous. For example,
* if the thread has not been back to user mode since the last stop, the
* thread state might indicate that nothing needs to be done.
+ *
+ * This is guaranteed to be invoked once before a task stops for ptrace and
+ * may include arch-specific operations necessary prior to a ptrace stop.
*/
#define arch_ptrace_stop_needed(code, info) (0)
#endif
diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h
index 96d465f..43c7251 100644
--- a/include/linux/reiserfs_fs.h
+++ b/include/linux/reiserfs_fs.h
@@ -1882,6 +1882,7 @@ struct reiserfs_transaction_handle *reiserfs_persistent_transaction(struct
*,
int count);
int reiserfs_end_persistent_transaction(struct reiserfs_transaction_handle *);
+void reiserfs_vfs_truncate_file(struct inode *inode);
int reiserfs_commit_page(struct inode *inode, struct page *page,
unsigned from, unsigned to);
int reiserfs_flush_old_commits(struct super_block *);
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index c445e52..40c2726 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1633,6 +1633,22 @@ static inline void skb_orphan(struct sk_buff *skb)
}

/**
+ * skb_orphan_frags - orphan the frags contained in a buffer
+ * @skb: buffer to orphan frags from
+ * @gfp_mask: allocation mask for replacement pages
+ *
+ * For each frag in the SKB which needs a destructor (i.e. has an
+ * owner) create a copy of that frag and release the original
+ * page by calling the destructor.
+ */
+static inline int skb_orphan_frags(struct sk_buff *skb, gfp_t gfp_mask)
+{
+ if (likely(!(skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY)))
+ return 0;
+ return skb_copy_ubufs(skb, gfp_mask);
+}
+
+/**
* __skb_queue_purge - empty a list
* @list: list to empty
*
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 34b06da..ba0ddb0 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -115,16 +115,9 @@ static inline void inet_peer_refcheck(const struct inet_peer *p)
/* can be called with or without local BH being disabled */
static inline int inet_getid(struct inet_peer *p, int more)
{
- int old, new;
more++;
inet_peer_refcheck(p);
- do {
- old = atomic_read(&p->ip_id_count);
- new = old + more;
- if (!new)
- new = 1;
- } while (atomic_cmpxchg(&p->ip_id_count, old, new) != old);
- return new;
+ return atomic_add_return(more, &p->ip_id_count) - more;
}

#endif /* _NET_INETPEER_H */
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 5591ed5..3152cc3 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -239,7 +239,7 @@ struct scsi_target {
struct list_head siblings;
struct list_head devices;
struct device dev;
- unsigned int reap_ref; /* protected by the host lock */
+ struct kref reap_ref; /* last put renders target invisible */
unsigned int channel;
unsigned int id; /* target id ... replace
* scsi_device.id eventually */
@@ -261,7 +261,6 @@ struct scsi_target {
#define SCSI_DEFAULT_TARGET_BLOCKED 3

char scsi_level;
- struct execute_work ew;
enum scsi_target_state state;
void *hostdata; /* available to low-level driver */
unsigned long starget_data[0]; /* for the transport */
diff --git a/include/sound/core.h b/include/sound/core.h
index 222f11e..6a3b03a 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -120,6 +120,8 @@ struct snd_card {
int user_ctl_count; /* count of all user controls */
struct list_head controls; /* all controls for this card */
struct list_head ctl_files; /* active control files */
+ struct mutex user_ctl_lock; /* protects user controls against
+ concurrent access */

struct snd_info_entry *proc_root; /* root for soundcard specific files */
struct snd_info_entry *proc_id; /* the card id */
diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index 31966a4..51b72d8 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -4,6 +4,7 @@
#include <linux/tracepoint.h>
#include <linux/unistd.h>
#include <linux/ftrace_event.h>
+#include <linux/thread_info.h>

#include <asm/ptrace.h>

@@ -54,4 +55,18 @@ int perf_sysexit_enable(struct ftrace_event_call *call);
void perf_sysexit_disable(struct ftrace_event_call *call);
#endif

+#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
+static inline void syscall_tracepoint_update(struct task_struct *p)
+{
+ if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
+ set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
+ else
+ clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
+}
+#else
+static inline void syscall_tracepoint_update(struct task_struct *p)
+{
+}
+#endif
+
#endif /* _TRACE_SYSCALL_H */
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index aeac7cc..d1d2843 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -688,6 +688,22 @@ static enum audit_state audit_filter_task(struct task_struct *tsk, char **key)
return AUDIT_BUILD_CONTEXT;
}

+static int audit_in_mask(const struct audit_krule *rule, unsigned long val)
+{
+ int word, bit;
+
+ if (val > 0xffffffff)
+ return false;
+
+ word = AUDIT_WORD(val);
+ if (word >= AUDIT_BITMASK_SIZE)
+ return false;
+
+ bit = AUDIT_BIT(val);
+
+ return rule->mask[word] & bit;
+}
+
/* At syscall entry and exit time, this filter is called if the
* audit_state is not low enough that auditing cannot take place, but is
* also not high enough that we already know we have to write an audit
@@ -705,11 +721,8 @@ static enum audit_state audit_filter_syscall(struct task_struct *tsk,

rcu_read_lock();
if (!list_empty(list)) {
- int word = AUDIT_WORD(ctx->major);
- int bit = AUDIT_BIT(ctx->major);
-
list_for_each_entry_rcu(e, list, list) {
- if ((e->rule.mask[word] & bit) == bit &&
+ if (audit_in_mask(&e->rule, ctx->major) &&
audit_filter_rules(tsk, &e->rule, ctx, NULL,
&state, false)) {
rcu_read_unlock();
@@ -738,8 +751,6 @@ void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx)

rcu_read_lock();
for (i = 0; i < ctx->name_count; i++) {
- int word = AUDIT_WORD(ctx->major);
- int bit = AUDIT_BIT(ctx->major);
struct audit_names *n = &ctx->names[i];
int h = audit_hash_ino((u32)n->ino);
struct list_head *list = &audit_inode_hash[h];
@@ -748,7 +759,7 @@ void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx)
continue;

list_for_each_entry_rcu(e, list, list) {
- if ((e->rule.mask[word] & bit) == bit &&
+ if (audit_in_mask(&e->rule, ctx->major) &&
audit_filter_rules(tsk, &e->rule, ctx, n,
&state, false)) {
rcu_read_unlock();
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1d1edcb..14c111c 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1180,6 +1180,11 @@ group_sched_out(struct perf_event *group_event,
cpuctx->exclusive = 0;
}

+struct remove_event {
+ struct perf_event *event;
+ bool detach_group;
+};
+
/*
* Cross CPU call to remove a performance event
*
@@ -1188,12 +1193,15 @@ group_sched_out(struct perf_event *group_event,
*/
static int __perf_remove_from_context(void *info)
{
- struct perf_event *event = info;
+ struct remove_event *re = info;
+ struct perf_event *event = re->event;
struct perf_event_context *ctx = event->ctx;
struct perf_cpu_context *cpuctx = __get_cpu_context(ctx);

raw_spin_lock(&ctx->lock);
event_sched_out(event, cpuctx, ctx);
+ if (re->detach_group)
+ perf_group_detach(event);
list_del_event(event, ctx);
if (!ctx->nr_events && cpuctx->task_ctx == ctx) {
ctx->is_active = 0;
@@ -1218,10 +1226,14 @@ static int __perf_remove_from_context(void *info)
* When called from perf_event_exit_task, it's OK because the
* context has been detached from its task.
*/
-static void perf_remove_from_context(struct perf_event *event)
+static void perf_remove_from_context(struct perf_event *event, bool detach_group)
{
struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
+ struct remove_event re = {
+ .event = event,
+ .detach_group = detach_group,
+ };

lockdep_assert_held(&ctx->mutex);

@@ -1230,12 +1242,12 @@ static void perf_remove_from_context(struct perf_event *event)
* Per cpu events are removed via an smp call and
* the removal is always successful.
*/
- cpu_function_call(event->cpu, __perf_remove_from_context, event);
+ cpu_function_call(event->cpu, __perf_remove_from_context, &re);
return;
}

retry:
- if (!task_function_call(task, __perf_remove_from_context, event))
+ if (!task_function_call(task, __perf_remove_from_context, &re))
return;

raw_spin_lock_irq(&ctx->lock);
@@ -1252,6 +1264,8 @@ retry:
* Since the task isn't running, its safe to remove the event, us
* holding the ctx->lock ensures the task won't get scheduled in.
*/
+ if (detach_group)
+ perf_group_detach(event);
list_del_event(event, ctx);
raw_spin_unlock_irq(&ctx->lock);
}
@@ -3046,10 +3060,7 @@ int perf_event_release_kernel(struct perf_event *event)
* to trigger the AB-BA case.
*/
mutex_lock_nested(&ctx->mutex, SINGLE_DEPTH_NESTING);
- raw_spin_lock_irq(&ctx->lock);
- perf_group_detach(event);
- raw_spin_unlock_irq(&ctx->lock);
- perf_remove_from_context(event);
+ perf_remove_from_context(event, true);
mutex_unlock(&ctx->mutex);

free_event(event);
@@ -6459,7 +6470,7 @@ SYSCALL_DEFINE5(perf_event_open,
struct perf_event_context *gctx = group_leader->ctx;

mutex_lock(&gctx->mutex);
- perf_remove_from_context(group_leader);
+ perf_remove_from_context(group_leader, false);

/*
* Removing from the context ends up with disabled
@@ -6469,7 +6480,7 @@ SYSCALL_DEFINE5(perf_event_open,
perf_event__state_init(group_leader);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
- perf_remove_from_context(sibling);
+ perf_remove_from_context(sibling, false);
perf_event__state_init(sibling);
put_ctx(gctx);
}
@@ -6622,13 +6633,7 @@ __perf_event_exit_task(struct perf_event *child_event,
struct perf_event_context *child_ctx,
struct task_struct *child)
{
- if (child_event->parent) {
- raw_spin_lock_irq(&child_ctx->lock);
- perf_group_detach(child_event);
- raw_spin_unlock_irq(&child_ctx->lock);
- }
-
- perf_remove_from_context(child_event);
+ perf_remove_from_context(child_event, !!child_event->parent);

/*
* It can happen that the parent exits first, and has events
@@ -7113,14 +7118,14 @@ static void perf_pmu_rotate_stop(struct pmu *pmu)

static void __perf_event_exit_context(void *__info)
{
+ struct remove_event re = { .detach_group = false };
struct perf_event_context *ctx = __info;
- struct perf_event *event;

perf_pmu_rotate_stop(ctx->pmu);

rcu_read_lock();
- list_for_each_entry_rcu(event, &ctx->event_list, event_entry)
- __perf_remove_from_context(event);
+ list_for_each_entry_rcu(re.event, &ctx->event_list, event_entry)
+ __perf_remove_from_context(&re);
rcu_read_unlock();
}

diff --git a/kernel/fork.c b/kernel/fork.c
index ce0c182..13bba30 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1370,7 +1370,9 @@ static struct task_struct *copy_process(unsigned long clone_flags,

total_forks++;
spin_unlock(&current->sighand->siglock);
+ syscall_tracepoint_update(p);
write_unlock_irq(&tasklist_lock);
+
proc_fork_connector(p);
cgroup_post_fork(p);
if (clone_flags & CLONE_THREAD)
@@ -1513,10 +1515,12 @@ long do_fork(unsigned long clone_flags,
*/
if (!IS_ERR(p)) {
struct completion vfork;
+ struct pid *pid;

trace_sched_process_fork(current, p);

- nr = task_pid_vnr(p);
+ pid = get_task_pid(p, PIDTYPE_PID);
+ nr = pid_vnr(pid);

if (clone_flags & CLONE_PARENT_SETTID)
put_user(nr, parent_tidptr);
@@ -1540,14 +1544,16 @@ long do_fork(unsigned long clone_flags,

/* forking complete and child started to run, tell ptracer */
if (unlikely(trace))
- ptrace_event(trace, nr);
+ ptrace_event_pid(trace, pid);

if (clone_flags & CLONE_VFORK) {
freezer_do_not_count();
wait_for_completion(&vfork);
freezer_count();
- ptrace_event(PTRACE_EVENT_VFORK_DONE, nr);
+ ptrace_event_pid(PTRACE_EVENT_VFORK_DONE, pid);
}
+
+ put_pid(pid);
} else {
nr = PTR_ERR(p);
}
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 4775229..127a32e 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -813,8 +813,8 @@ static int irq_thread(void *data)

raw_spin_unlock_irq(&desc->lock);
action_ret = handler_fn(desc, action);
- if (!noirqdebug)
- note_interrupt(action->irq, desc, action_ret);
+ if (action_ret == IRQ_HANDLED)
+ atomic_inc(&desc->threads_handled);
}

wake = atomic_dec_and_test(&desc->threads_active);
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index 63633a3..6d426eb 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -265,21 +265,119 @@ try_misrouted_irq(unsigned int irq, struct irq_desc *desc,
return action && (action->flags & IRQF_IRQPOLL);
}

+#define SPURIOUS_DEFERRED 0x80000000
+
void note_interrupt(unsigned int irq, struct irq_desc *desc,
irqreturn_t action_ret)
{
if (desc->istate & IRQS_POLL_INPROGRESS)
return;

- /* we get here again via the threaded handler */
- if (action_ret == IRQ_WAKE_THREAD)
- return;
-
if (bad_action_ret(action_ret)) {
report_bad_irq(irq, desc, action_ret);
return;
}

+ /*
+ * We cannot call note_interrupt from the threaded handler
+ * because we need to look at the compound of all handlers
+ * (primary and threaded). Aside of that in the threaded
+ * shared case we have no serialization against an incoming
+ * hardware interrupt while we are dealing with a threaded
+ * result.
+ *
+ * So in case a thread is woken, we just note the fact and
+ * defer the analysis to the next hardware interrupt.
+ *
+ * The threaded handlers store whether they sucessfully
+ * handled an interrupt and we check whether that number
+ * changed versus the last invocation.
+ *
+ * We could handle all interrupts with the delayed by one
+ * mechanism, but for the non forced threaded case we'd just
+ * add pointless overhead to the straight hardirq interrupts
+ * for the sake of a few lines less code.
+ */
+ if (action_ret & IRQ_WAKE_THREAD) {
+ /*
+ * There is a thread woken. Check whether one of the
+ * shared primary handlers returned IRQ_HANDLED. If
+ * not we defer the spurious detection to the next
+ * interrupt.
+ */
+ if (action_ret == IRQ_WAKE_THREAD) {
+ int handled;
+ /*
+ * We use bit 31 of thread_handled_last to
+ * denote the deferred spurious detection
+ * active. No locking necessary as
+ * thread_handled_last is only accessed here
+ * and we have the guarantee that hard
+ * interrupts are not reentrant.
+ */
+ if (!(desc->threads_handled_last & SPURIOUS_DEFERRED)) {
+ desc->threads_handled_last |= SPURIOUS_DEFERRED;
+ return;
+ }
+ /*
+ * Check whether one of the threaded handlers
+ * returned IRQ_HANDLED since the last
+ * interrupt happened.
+ *
+ * For simplicity we just set bit 31, as it is
+ * set in threads_handled_last as well. So we
+ * avoid extra masking. And we really do not
+ * care about the high bits of the handled
+ * count. We just care about the count being
+ * different than the one we saw before.
+ */
+ handled = atomic_read(&desc->threads_handled);
+ handled |= SPURIOUS_DEFERRED;
+ if (handled != desc->threads_handled_last) {
+ action_ret = IRQ_HANDLED;
+ /*
+ * Note: We keep the SPURIOUS_DEFERRED
+ * bit set. We are handling the
+ * previous invocation right now.
+ * Keep it for the current one, so the
+ * next hardware interrupt will
+ * account for it.
+ */
+ desc->threads_handled_last = handled;
+ } else {
+ /*
+ * None of the threaded handlers felt
+ * responsible for the last interrupt
+ *
+ * We keep the SPURIOUS_DEFERRED bit
+ * set in threads_handled_last as we
+ * need to account for the current
+ * interrupt as well.
+ */
+ action_ret = IRQ_NONE;
+ }
+ } else {
+ /*
+ * One of the primary handlers returned
+ * IRQ_HANDLED. So we don't care about the
+ * threaded handlers on the same line. Clear
+ * the deferred detection bit.
+ *
+ * In theory we could/should check whether the
+ * deferred bit is set and take the result of
+ * the previous run into account here as
+ * well. But it's really not worth the
+ * trouble. If every other interrupt is
+ * handled we never trigger the spurious
+ * detector. And if this is just the one out
+ * of 100k unhandled ones which is handled
+ * then we merily delay the spurious detection
+ * by one hard interrupt. Not a real problem.
+ */
+ desc->threads_handled_last &= ~SPURIOUS_DEFERRED;
+ }
+ }
+
if (unlikely(action_ret == IRQ_NONE)) {
/*
* If we are seeing only the odd spurious IRQ caused by
diff --git a/kernel/rtmutex-debug.h b/kernel/rtmutex-debug.h
index 14193d5..ab29b6a 100644
--- a/kernel/rtmutex-debug.h
+++ b/kernel/rtmutex-debug.h
@@ -31,3 +31,8 @@ static inline int debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
{
return (waiter != NULL);
}
+
+static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
+{
+ debug_rt_mutex_print_deadlock(w);
+}
diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c
index f9d8482..1928f3d 100644
--- a/kernel/rtmutex.c
+++ b/kernel/rtmutex.c
@@ -81,6 +81,47 @@ static inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
owner = *p;
} while (cmpxchg(p, owner, owner | RT_MUTEX_HAS_WAITERS) != owner);
}
+
+/*
+ * Safe fastpath aware unlock:
+ * 1) Clear the waiters bit
+ * 2) Drop lock->wait_lock
+ * 3) Try to unlock the lock with cmpxchg
+ */
+static inline bool unlock_rt_mutex_safe(struct rt_mutex *lock)
+ __releases(lock->wait_lock)
+{
+ struct task_struct *owner = rt_mutex_owner(lock);
+
+ clear_rt_mutex_waiters(lock);
+ raw_spin_unlock(&lock->wait_lock);
+ /*
+ * If a new waiter comes in between the unlock and the cmpxchg
+ * we have two situations:
+ *
+ * unlock(wait_lock);
+ * lock(wait_lock);
+ * cmpxchg(p, owner, 0) == owner
+ * mark_rt_mutex_waiters(lock);
+ * acquire(lock);
+ * or:
+ *
+ * unlock(wait_lock);
+ * lock(wait_lock);
+ * mark_rt_mutex_waiters(lock);
+ *
+ * cmpxchg(p, owner, 0) != owner
+ * enqueue_waiter();
+ * unlock(wait_lock);
+ * lock(wait_lock);
+ * wake waiter();
+ * unlock(wait_lock);
+ * lock(wait_lock);
+ * acquire(lock);
+ */
+ return rt_mutex_cmpxchg(lock, owner, NULL);
+}
+
#else
# define rt_mutex_cmpxchg(l,c,n) (0)
static inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
@@ -88,6 +129,17 @@ static inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
lock->owner = (struct task_struct *)
((unsigned long)lock->owner | RT_MUTEX_HAS_WAITERS);
}
+
+/*
+ * Simple slow path only version: lock->owner is protected by lock->wait_lock.
+ */
+static inline bool unlock_rt_mutex_safe(struct rt_mutex *lock)
+ __releases(lock->wait_lock)
+{
+ lock->owner = NULL;
+ raw_spin_unlock(&lock->wait_lock);
+ return true;
+}
#endif

/*
@@ -141,14 +193,36 @@ static void rt_mutex_adjust_prio(struct task_struct *task)
*/
int max_lock_depth = 1024;

+static inline struct rt_mutex *task_blocked_on_lock(struct task_struct *p)
+{
+ return p->pi_blocked_on ? p->pi_blocked_on->lock : NULL;
+}
+
/*
* Adjust the priority chain. Also used for deadlock detection.
* Decreases task's usage by one - may thus free the task.
+ *
+ * @task: the task owning the mutex (owner) for which a chain walk is
+ * probably needed
+ * @deadlock_detect: do we have to carry out deadlock detection?
+ * @orig_lock: the mutex (can be NULL if we are walking the chain to recheck
+ * things for a task that has just got its priority adjusted, and
+ * is waiting on a mutex)
+ * @next_lock: the mutex on which the owner of @orig_lock was blocked before
+ * we dropped its pi_lock. Is never dereferenced, only used for
+ * comparison to detect lock chain changes.
+ * @orig_waiter: rt_mutex_waiter struct for the task that has just donated
+ * its priority to the mutex owner (can be NULL in the case
+ * depicted above or if the top waiter is gone away and we are
+ * actually deboosting the owner)
+ * @top_task: the current top waiter
+ *
* Returns 0 or -EDEADLK.
*/
static int rt_mutex_adjust_prio_chain(struct task_struct *task,
int deadlock_detect,
struct rt_mutex *orig_lock,
+ struct rt_mutex *next_lock,
struct rt_mutex_waiter *orig_waiter,
struct task_struct *top_task)
{
@@ -182,7 +256,7 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
}
put_task_struct(task);

- return deadlock_detect ? -EDEADLK : 0;
+ return -EDEADLK;
}
retry:
/*
@@ -207,13 +281,32 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
goto out_unlock_pi;

/*
+ * We dropped all locks after taking a refcount on @task, so
+ * the task might have moved on in the lock chain or even left
+ * the chain completely and blocks now on an unrelated lock or
+ * on @orig_lock.
+ *
+ * We stored the lock on which @task was blocked in @next_lock,
+ * so we can detect the chain change.
+ */
+ if (next_lock != waiter->lock)
+ goto out_unlock_pi;
+
+ /*
* Drop out, when the task has no waiters. Note,
* top_waiter can be NULL, when we are in the deboosting
* mode!
*/
- if (top_waiter && (!task_has_pi_waiters(task) ||
- top_waiter != task_top_pi_waiter(task)))
- goto out_unlock_pi;
+ if (top_waiter) {
+ if (!task_has_pi_waiters(task))
+ goto out_unlock_pi;
+ /*
+ * If deadlock detection is off, we stop here if we
+ * are not the top pi waiter of the task.
+ */
+ if (!detect_deadlock && top_waiter != task_top_pi_waiter(task))
+ goto out_unlock_pi;
+ }

/*
* When deadlock detection is off then we check, if further
@@ -229,11 +322,16 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
goto retry;
}

- /* Deadlock detection */
+ /*
+ * Deadlock detection. If the lock is the same as the original
+ * lock which caused us to walk the lock chain or if the
+ * current lock is owned by the task which initiated the chain
+ * walk, we detected a deadlock.
+ */
if (lock == orig_lock || rt_mutex_owner(lock) == top_task) {
debug_rt_mutex_deadlock(deadlock_detect, orig_waiter, lock);
raw_spin_unlock(&lock->wait_lock);
- ret = deadlock_detect ? -EDEADLK : 0;
+ ret = -EDEADLK;
goto out_unlock_pi;
}

@@ -280,11 +378,26 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
__rt_mutex_adjust_prio(task);
}

+ /*
+ * Check whether the task which owns the current lock is pi
+ * blocked itself. If yes we store a pointer to the lock for
+ * the lock chain change detection above. After we dropped
+ * task->pi_lock next_lock cannot be dereferenced anymore.
+ */
+ next_lock = task_blocked_on_lock(task);
+
raw_spin_unlock_irqrestore(&task->pi_lock, flags);

top_waiter = rt_mutex_top_waiter(lock);
raw_spin_unlock(&lock->wait_lock);

+ /*
+ * We reached the end of the lock chain. Stop right here. No
+ * point to go back just to figure that out.
+ */
+ if (!next_lock)
+ goto out_put_task;
+
if (!detect_deadlock && waiter != top_waiter)
goto out_put_task;

@@ -395,8 +508,21 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
{
struct task_struct *owner = rt_mutex_owner(lock);
struct rt_mutex_waiter *top_waiter = waiter;
- unsigned long flags;
+ struct rt_mutex *next_lock;
int chain_walk = 0, res;
+ unsigned long flags;
+
+ /*
+ * Early deadlock detection. We really don't want the task to
+ * enqueue on itself just to untangle the mess later. It's not
+ * only an optimization. We drop the locks, so another waiter
+ * can come in before the chain walk detects the deadlock. So
+ * the other will detect the deadlock and return -EDEADLOCK,
+ * which is wrong, as the other waiter is not in a deadlock
+ * situation.
+ */
+ if (owner == task)
+ return -EDEADLK;

raw_spin_lock_irqsave(&task->pi_lock, flags);
__rt_mutex_adjust_prio(task);
@@ -417,20 +543,28 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
if (!owner)
return 0;

+ raw_spin_lock_irqsave(&owner->pi_lock, flags);
if (waiter == rt_mutex_top_waiter(lock)) {
- raw_spin_lock_irqsave(&owner->pi_lock, flags);
plist_del(&top_waiter->pi_list_entry, &owner->pi_waiters);
plist_add(&waiter->pi_list_entry, &owner->pi_waiters);

__rt_mutex_adjust_prio(owner);
if (owner->pi_blocked_on)
chain_walk = 1;
- raw_spin_unlock_irqrestore(&owner->pi_lock, flags);
- }
- else if (debug_rt_mutex_detect_deadlock(waiter, detect_deadlock))
+ } else if (debug_rt_mutex_detect_deadlock(waiter, detect_deadlock)) {
chain_walk = 1;
+ }
+
+ /* Store the lock on which owner is blocked or NULL */
+ next_lock = task_blocked_on_lock(owner);

- if (!chain_walk)
+ raw_spin_unlock_irqrestore(&owner->pi_lock, flags);
+ /*
+ * Even if full deadlock detection is on, if the owner is not
+ * blocked itself, we can avoid finding this out in the chain
+ * walk.
+ */
+ if (!chain_walk || !next_lock)
return 0;

/*
@@ -442,8 +576,8 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,

raw_spin_unlock(&lock->wait_lock);

- res = rt_mutex_adjust_prio_chain(owner, detect_deadlock, lock, waiter,
- task);
+ res = rt_mutex_adjust_prio_chain(owner, detect_deadlock, lock,
+ next_lock, waiter, task);

raw_spin_lock(&lock->wait_lock);

@@ -453,7 +587,8 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
/*
* Wake up the next waiter on the lock.
*
- * Remove the top waiter from the current tasks waiter list and wake it up.
+ * Remove the top waiter from the current tasks pi waiter list and
+ * wake it up.
*
* Called with lock->wait_lock held.
*/
@@ -474,10 +609,23 @@ static void wakeup_next_waiter(struct rt_mutex *lock)
*/
plist_del(&waiter->pi_list_entry, &current->pi_waiters);

- rt_mutex_set_owner(lock, NULL);
+ /*
+ * As we are waking up the top waiter, and the waiter stays
+ * queued on the lock until it gets the lock, this lock
+ * obviously has waiters. Just set the bit here and this has
+ * the added benefit of forcing all new tasks into the
+ * slow path making sure no task of lower priority than
+ * the top waiter can steal this lock.
+ */
+ lock->owner = (void *) RT_MUTEX_HAS_WAITERS;

raw_spin_unlock_irqrestore(&current->pi_lock, flags);

+ /*
+ * It's safe to dereference waiter as it cannot go away as
+ * long as we hold lock->wait_lock. The waiter task needs to
+ * acquire it in order to dequeue the waiter.
+ */
wake_up_process(waiter->task);
}

@@ -492,8 +640,8 @@ static void remove_waiter(struct rt_mutex *lock,
{
int first = (waiter == rt_mutex_top_waiter(lock));
struct task_struct *owner = rt_mutex_owner(lock);
+ struct rt_mutex *next_lock = NULL;
unsigned long flags;
- int chain_walk = 0;

raw_spin_lock_irqsave(&current->pi_lock, flags);
plist_del(&waiter->list_entry, &lock->wait_list);
@@ -517,15 +665,15 @@ static void remove_waiter(struct rt_mutex *lock,
}
__rt_mutex_adjust_prio(owner);

- if (owner->pi_blocked_on)
- chain_walk = 1;
+ /* Store the lock on which owner is blocked or NULL */
+ next_lock = task_blocked_on_lock(owner);

raw_spin_unlock_irqrestore(&owner->pi_lock, flags);
}

WARN_ON(!plist_node_empty(&waiter->pi_list_entry));

- if (!chain_walk)
+ if (!next_lock)
return;

/* gets dropped in rt_mutex_adjust_prio_chain()! */
@@ -533,7 +681,7 @@ static void remove_waiter(struct rt_mutex *lock,

raw_spin_unlock(&lock->wait_lock);

- rt_mutex_adjust_prio_chain(owner, 0, lock, NULL, current);
+ rt_mutex_adjust_prio_chain(owner, 0, lock, next_lock, NULL, current);

raw_spin_lock(&lock->wait_lock);
}
@@ -546,6 +694,7 @@ static void remove_waiter(struct rt_mutex *lock,
void rt_mutex_adjust_pi(struct task_struct *task)
{
struct rt_mutex_waiter *waiter;
+ struct rt_mutex *next_lock;
unsigned long flags;

raw_spin_lock_irqsave(&task->pi_lock, flags);
@@ -555,12 +704,13 @@ void rt_mutex_adjust_pi(struct task_struct *task)
raw_spin_unlock_irqrestore(&task->pi_lock, flags);
return;
}
-
+ next_lock = waiter->lock;
raw_spin_unlock_irqrestore(&task->pi_lock, flags);

/* gets dropped in rt_mutex_adjust_prio_chain()! */
get_task_struct(task);
- rt_mutex_adjust_prio_chain(task, 0, NULL, NULL, task);
+
+ rt_mutex_adjust_prio_chain(task, 0, NULL, next_lock, NULL, task);
}

/**
@@ -620,6 +770,26 @@ __rt_mutex_slowlock(struct rt_mutex *lock, int state,
return ret;
}

+static void rt_mutex_handle_deadlock(int res, int detect_deadlock,
+ struct rt_mutex_waiter *w)
+{
+ /*
+ * If the result is not -EDEADLOCK or the caller requested
+ * deadlock detection, nothing to do here.
+ */
+ if (res != -EDEADLOCK || detect_deadlock)
+ return;
+
+ /*
+ * Yell lowdly and stop the task right here.
+ */
+ rt_mutex_print_deadlock(w);
+ while (1) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ }
+}
+
/*
* Slow path lock function:
*/
@@ -657,8 +827,10 @@ rt_mutex_slowlock(struct rt_mutex *lock, int state,

set_current_state(TASK_RUNNING);

- if (unlikely(ret))
+ if (unlikely(ret)) {
remove_waiter(lock, &waiter);
+ rt_mutex_handle_deadlock(ret, detect_deadlock, &waiter);
+ }

/*
* try_to_take_rt_mutex() sets the waiter bit
@@ -714,12 +886,49 @@ rt_mutex_slowunlock(struct rt_mutex *lock)

rt_mutex_deadlock_account_unlock(current);

- if (!rt_mutex_has_waiters(lock)) {
- lock->owner = NULL;
- raw_spin_unlock(&lock->wait_lock);
- return;
+ /*
+ * We must be careful here if the fast path is enabled. If we
+ * have no waiters queued we cannot set owner to NULL here
+ * because of:
+ *
+ * foo->lock->owner = NULL;
+ * rtmutex_lock(foo->lock); <- fast path
+ * free = atomic_dec_and_test(foo->refcnt);
+ * rtmutex_unlock(foo->lock); <- fast path
+ * if (free)
+ * kfree(foo);
+ * raw_spin_unlock(foo->lock->wait_lock);
+ *
+ * So for the fastpath enabled kernel:
+ *
+ * Nothing can set the waiters bit as long as we hold
+ * lock->wait_lock. So we do the following sequence:
+ *
+ * owner = rt_mutex_owner(lock);
+ * clear_rt_mutex_waiters(lock);
+ * raw_spin_unlock(&lock->wait_lock);
+ * if (cmpxchg(&lock->owner, owner, 0) == owner)
+ * return;
+ * goto retry;
+ *
+ * The fastpath disabled variant is simple as all access to
+ * lock->owner is serialized by lock->wait_lock:
+ *
+ * lock->owner = NULL;
+ * raw_spin_unlock(&lock->wait_lock);
+ */
+ while (!rt_mutex_has_waiters(lock)) {
+ /* Drops lock->wait_lock ! */
+ if (unlock_rt_mutex_safe(lock) == true)
+ return;
+ /* Relock the rtmutex and try again */
+ raw_spin_lock(&lock->wait_lock);
}

+ /*
+ * The wakeup next waiter path does not suffer from the above
+ * race. See the comments there.
+ */
wakeup_next_waiter(lock);

raw_spin_unlock(&lock->wait_lock);
@@ -966,7 +1175,8 @@ int rt_mutex_start_proxy_lock(struct rt_mutex *lock,
return 1;
}

- ret = task_blocks_on_rt_mutex(lock, waiter, task, detect_deadlock);
+ /* We enforce deadlock detection for futexes */
+ ret = task_blocks_on_rt_mutex(lock, waiter, task, 1);

if (ret && !rt_mutex_owner(lock)) {
/*
diff --git a/kernel/rtmutex.h b/kernel/rtmutex.h
index a1a1dd0..f6a1f3c 100644
--- a/kernel/rtmutex.h
+++ b/kernel/rtmutex.h
@@ -24,3 +24,8 @@
#define debug_rt_mutex_print_deadlock(w) do { } while (0)
#define debug_rt_mutex_detect_deadlock(w,d) (d)
#define debug_rt_mutex_reset_waiter(w) do { } while (0)
+
+static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
+{
+ WARN(1, "rtmutex deadlock detected\n");
+}
diff --git a/lib/decompress_unlzo.c b/lib/decompress_unlzo.c
index 5a7a2ad..26f89ad 100644
--- a/lib/decompress_unlzo.c
+++ b/lib/decompress_unlzo.c
@@ -31,7 +31,7 @@
*/

#ifdef STATIC
-#include "lzo/lzo1x_decompress.c"
+#include "lzo/lzo1x_decompress_safe.c"
#else
#include <linux/decompress/unlzo.h>
#endif
diff --git a/lib/idr.c b/lib/idr.c
index aadc525..2d3879b 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -167,7 +167,7 @@ static int sub_alloc(struct idr *idp, int *starting_id, struct idr_layer **pa)
id = (id | ((1 << (IDR_BITS * l)) - 1)) + 1;

/* if already at the top layer, we need to grow */
- if (id >= 1 << (idp->layers * IDR_BITS)) {
+ if (id > idr_max(idp->layers)) {
*starting_id = id;
return IDR_NEED_TO_GROW;
}
@@ -672,14 +672,12 @@ void *idr_replace(struct idr *idp, void *ptr, int id)
if (!p)
return ERR_PTR(-EINVAL);

- n = (p->layer+1) * IDR_BITS;
-
id &= MAX_ID_MASK;

- if (id >= (1 << n))
+ if (id > idr_max(p->layer + 1))
return ERR_PTR(-EINVAL);

- n -= IDR_BITS;
+ n = p->layer * IDR_BITS;
while ((n > 0) && p) {
p = p->ary[(id >> n) & IDR_MASK];
n -= IDR_BITS;
diff --git a/lib/lzo/Makefile b/lib/lzo/Makefile
index e764116..f0f7d7c 100644
--- a/lib/lzo/Makefile
+++ b/lib/lzo/Makefile
@@ -1,5 +1,5 @@
lzo_compress-objs := lzo1x_compress.o
-lzo_decompress-objs := lzo1x_decompress.o
+lzo_decompress-objs := lzo1x_decompress_safe.o

obj-$(CONFIG_LZO_COMPRESS) += lzo_compress.o
obj-$(CONFIG_LZO_DECOMPRESS) += lzo_decompress.o
diff --git a/lib/lzo/lzo1x_compress.c b/lib/lzo/lzo1x_compress.c
index a604099..236eb21 100644
--- a/lib/lzo/lzo1x_compress.c
+++ b/lib/lzo/lzo1x_compress.c
@@ -1,194 +1,243 @@
/*
- * LZO1X Compressor from MiniLZO
+ * LZO1X Compressor from LZO
*
- * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
+ * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
*
* The full LZO package can be found at:
* http://www.oberhumer.com/opensource/lzo/
*
- * Changed for kernel use by:
+ * Changed for Linux kernel use by:
* Nitin Gupta <nitingupta910@xxxxxxxxx>
* Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
*/

#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/lzo.h>
#include <asm/unaligned.h>
+#include <linux/lzo.h>
#include "lzodefs.h"

static noinline size_t
-_lzo1x_1_do_compress(const unsigned char *in, size_t in_len,
- unsigned char *out, size_t *out_len, void *wrkmem)
+lzo1x_1_do_compress(const unsigned char *in, size_t in_len,
+ unsigned char *out, size_t *out_len,
+ size_t ti, void *wrkmem)
{
+ const unsigned char *ip;
+ unsigned char *op;
const unsigned char * const in_end = in + in_len;
- const unsigned char * const ip_end = in + in_len - M2_MAX_LEN - 5;
- const unsigned char ** const dict = wrkmem;
- const unsigned char *ip = in, *ii = ip;
- const unsigned char *end, *m, *m_pos;
- size_t m_off, m_len, dindex;
- unsigned char *op = out;
+ const unsigned char * const ip_end = in + in_len - 20;
+ const unsigned char *ii;
+ lzo_dict_t * const dict = (lzo_dict_t *) wrkmem;

- ip += 4;
+ op = out;
+ ip = in;
+ ii = ip;
+ ip += ti < 4 ? 4 - ti : 0;

for (;;) {
- dindex = ((size_t)(0x21 * DX3(ip, 5, 5, 6)) >> 5) & D_MASK;
- m_pos = dict[dindex];
-
- if (m_pos < in)
- goto literal;
-
- if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
- goto literal;
-
- m_off = ip - m_pos;
- if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
- goto try_match;
-
- dindex = (dindex & (D_MASK & 0x7ff)) ^ (D_HIGH | 0x1f);
- m_pos = dict[dindex];
-
- if (m_pos < in)
- goto literal;
-
- if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
- goto literal;
-
- m_off = ip - m_pos;
- if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
- goto try_match;
-
- goto literal;
-
-try_match:
- if (get_unaligned((const unsigned short *)m_pos)
- == get_unaligned((const unsigned short *)ip)) {
- if (likely(m_pos[2] == ip[2]))
- goto match;
- }
-
+ const unsigned char *m_pos;
+ size_t t, m_len, m_off;
+ u32 dv;
literal:
- dict[dindex] = ip;
- ++ip;
+ ip += 1 + ((ip - ii) >> 5);
+next:
if (unlikely(ip >= ip_end))
break;
- continue;
-
-match:
- dict[dindex] = ip;
- if (ip != ii) {
- size_t t = ip - ii;
+ dv = get_unaligned_le32(ip);
+ t = ((dv * 0x1824429d) >> (32 - D_BITS)) & D_MASK;
+ m_pos = in + dict[t];
+ dict[t] = (lzo_dict_t) (ip - in);
+ if (unlikely(dv != get_unaligned_le32(m_pos)))
+ goto literal;

+ ii -= ti;
+ ti = 0;
+ t = ip - ii;
+ if (t != 0) {
if (t <= 3) {
op[-2] |= t;
- } else if (t <= 18) {
+ COPY4(op, ii);
+ op += t;
+ } else if (t <= 16) {
*op++ = (t - 3);
+ COPY8(op, ii);
+ COPY8(op + 8, ii + 8);
+ op += t;
} else {
- size_t tt = t - 18;
-
- *op++ = 0;
- while (tt > 255) {
- tt -= 255;
+ if (t <= 18) {
+ *op++ = (t - 3);
+ } else {
+ size_t tt = t - 18;
*op++ = 0;
+ while (unlikely(tt > 255)) {
+ tt -= 255;
+ *op++ = 0;
+ }
+ *op++ = tt;
}
- *op++ = tt;
+ do {
+ COPY8(op, ii);
+ COPY8(op + 8, ii + 8);
+ op += 16;
+ ii += 16;
+ t -= 16;
+ } while (t >= 16);
+ if (t > 0) do {
+ *op++ = *ii++;
+ } while (--t > 0);
}
- do {
- *op++ = *ii++;
- } while (--t > 0);
}

- ip += 3;
- if (m_pos[3] != *ip++ || m_pos[4] != *ip++
- || m_pos[5] != *ip++ || m_pos[6] != *ip++
- || m_pos[7] != *ip++ || m_pos[8] != *ip++) {
- --ip;
- m_len = ip - ii;
+ m_len = 4;
+ {
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && defined(LZO_USE_CTZ64)
+ u64 v;
+ v = get_unaligned((const u64 *) (ip + m_len)) ^
+ get_unaligned((const u64 *) (m_pos + m_len));
+ if (unlikely(v == 0)) {
+ do {
+ m_len += 8;
+ v = get_unaligned((const u64 *) (ip + m_len)) ^
+ get_unaligned((const u64 *) (m_pos + m_len));
+ if (unlikely(ip + m_len >= ip_end))
+ goto m_len_done;
+ } while (v == 0);
+ }
+# if defined(__LITTLE_ENDIAN)
+ m_len += (unsigned) __builtin_ctzll(v) / 8;
+# elif defined(__BIG_ENDIAN)
+ m_len += (unsigned) __builtin_clzll(v) / 8;
+# else
+# error "missing endian definition"
+# endif
+#elif defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && defined(LZO_USE_CTZ32)
+ u32 v;
+ v = get_unaligned((const u32 *) (ip + m_len)) ^
+ get_unaligned((const u32 *) (m_pos + m_len));
+ if (unlikely(v == 0)) {
+ do {
+ m_len += 4;
+ v = get_unaligned((const u32 *) (ip + m_len)) ^
+ get_unaligned((const u32 *) (m_pos + m_len));
+ if (v != 0)
+ break;
+ m_len += 4;
+ v = get_unaligned((const u32 *) (ip + m_len)) ^
+ get_unaligned((const u32 *) (m_pos + m_len));
+ if (unlikely(ip + m_len >= ip_end))
+ goto m_len_done;
+ } while (v == 0);
+ }
+# if defined(__LITTLE_ENDIAN)
+ m_len += (unsigned) __builtin_ctz(v) / 8;
+# elif defined(__BIG_ENDIAN)
+ m_len += (unsigned) __builtin_clz(v) / 8;
+# else
+# error "missing endian definition"
+# endif
+#else
+ if (unlikely(ip[m_len] == m_pos[m_len])) {
+ do {
+ m_len += 1;
+ if (ip[m_len] != m_pos[m_len])
+ break;
+ m_len += 1;
+ if (ip[m_len] != m_pos[m_len])
+ break;
+ m_len += 1;
+ if (ip[m_len] != m_pos[m_len])
+ break;
+ m_len += 1;
+ if (ip[m_len] != m_pos[m_len])
+ break;
+ m_len += 1;
+ if (ip[m_len] != m_pos[m_len])
+ break;
+ m_len += 1;
+ if (ip[m_len] != m_pos[m_len])
+ break;
+ m_len += 1;
+ if (ip[m_len] != m_pos[m_len])
+ break;
+ m_len += 1;
+ if (unlikely(ip + m_len >= ip_end))
+ goto m_len_done;
+ } while (ip[m_len] == m_pos[m_len]);
+ }
+#endif
+ }
+m_len_done:

- if (m_off <= M2_MAX_OFFSET) {
- m_off -= 1;
- *op++ = (((m_len - 1) << 5)
- | ((m_off & 7) << 2));
- *op++ = (m_off >> 3);
- } else if (m_off <= M3_MAX_OFFSET) {
- m_off -= 1;
+ m_off = ip - m_pos;
+ ip += m_len;
+ ii = ip;
+ if (m_len <= M2_MAX_LEN && m_off <= M2_MAX_OFFSET) {
+ m_off -= 1;
+ *op++ = (((m_len - 1) << 5) | ((m_off & 7) << 2));
+ *op++ = (m_off >> 3);
+ } else if (m_off <= M3_MAX_OFFSET) {
+ m_off -= 1;
+ if (m_len <= M3_MAX_LEN)
*op++ = (M3_MARKER | (m_len - 2));
- goto m3_m4_offset;
- } else {
- m_off -= 0x4000;
-
- *op++ = (M4_MARKER | ((m_off & 0x4000) >> 11)
- | (m_len - 2));
- goto m3_m4_offset;
+ else {
+ m_len -= M3_MAX_LEN;
+ *op++ = M3_MARKER | 0;
+ while (unlikely(m_len > 255)) {
+ m_len -= 255;
+ *op++ = 0;
+ }
+ *op++ = (m_len);
}
+ *op++ = (m_off << 2);
+ *op++ = (m_off >> 6);
} else {
- end = in_end;
- m = m_pos + M2_MAX_LEN + 1;
-
- while (ip < end && *m == *ip) {
- m++;
- ip++;
- }
- m_len = ip - ii;
-
- if (m_off <= M3_MAX_OFFSET) {
- m_off -= 1;
- if (m_len <= 33) {
- *op++ = (M3_MARKER | (m_len - 2));
- } else {
- m_len -= 33;
- *op++ = M3_MARKER | 0;
- goto m3_m4_len;
- }
- } else {
- m_off -= 0x4000;
- if (m_len <= M4_MAX_LEN) {
- *op++ = (M4_MARKER
- | ((m_off & 0x4000) >> 11)
+ m_off -= 0x4000;
+ if (m_len <= M4_MAX_LEN)
+ *op++ = (M4_MARKER | ((m_off >> 11) & 8)
| (m_len - 2));
- } else {
- m_len -= M4_MAX_LEN;
- *op++ = (M4_MARKER
- | ((m_off & 0x4000) >> 11));
-m3_m4_len:
- while (m_len > 255) {
- m_len -= 255;
- *op++ = 0;
- }
-
- *op++ = (m_len);
+ else {
+ m_len -= M4_MAX_LEN;
+ *op++ = (M4_MARKER | ((m_off >> 11) & 8));
+ while (unlikely(m_len > 255)) {
+ m_len -= 255;
+ *op++ = 0;
}
+ *op++ = (m_len);
}
-m3_m4_offset:
- *op++ = ((m_off & 63) << 2);
+ *op++ = (m_off << 2);
*op++ = (m_off >> 6);
}
-
- ii = ip;
- if (unlikely(ip >= ip_end))
- break;
+ goto next;
}
-
*out_len = op - out;
- return in_end - ii;
+ return in_end - (ii - ti);
}

-int lzo1x_1_compress(const unsigned char *in, size_t in_len, unsigned char *out,
- size_t *out_len, void *wrkmem)
+int lzo1x_1_compress(const unsigned char *in, size_t in_len,
+ unsigned char *out, size_t *out_len,
+ void *wrkmem)
{
- const unsigned char *ii;
+ const unsigned char *ip = in;
unsigned char *op = out;
- size_t t;
+ size_t l = in_len;
+ size_t t = 0;

- if (unlikely(in_len <= M2_MAX_LEN + 5)) {
- t = in_len;
- } else {
- t = _lzo1x_1_do_compress(in, in_len, op, out_len, wrkmem);
+ while (l > 20) {
+ size_t ll = l <= (M4_MAX_OFFSET + 1) ? l : (M4_MAX_OFFSET + 1);
+ uintptr_t ll_end = (uintptr_t) ip + ll;
+ if ((ll_end + ((t + ll) >> 5)) <= ll_end)
+ break;
+ BUILD_BUG_ON(D_SIZE * sizeof(lzo_dict_t) > LZO1X_1_MEM_COMPRESS);
+ memset(wrkmem, 0, D_SIZE * sizeof(lzo_dict_t));
+ t = lzo1x_1_do_compress(ip, ll, op, out_len, t, wrkmem);
+ ip += ll;
op += *out_len;
+ l -= ll;
}
+ t += l;

if (t > 0) {
- ii = in + in_len - t;
+ const unsigned char *ii = in + in_len - t;

if (op == out && t <= 238) {
*op++ = (17 + t);
@@ -198,16 +247,21 @@ int lzo1x_1_compress(const unsigned char *in, size_t in_len, unsigned char *out,
*op++ = (t - 3);
} else {
size_t tt = t - 18;
-
*op++ = 0;
while (tt > 255) {
tt -= 255;
*op++ = 0;
}
-
*op++ = tt;
}
- do {
+ if (t >= 16) do {
+ COPY8(op, ii);
+ COPY8(op + 8, ii + 8);
+ op += 16;
+ ii += 16;
+ t -= 16;
+ } while (t >= 16);
+ if (t > 0) do {
*op++ = *ii++;
} while (--t > 0);
}
@@ -223,4 +277,3 @@ EXPORT_SYMBOL_GPL(lzo1x_1_compress);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZO1X-1 Compressor");
-
diff --git a/lib/lzo/lzo1x_decompress.c b/lib/lzo/lzo1x_decompress.c
deleted file mode 100644
index f2fd098..0000000
--- a/lib/lzo/lzo1x_decompress.c
+++ /dev/null
@@ -1,255 +0,0 @@
-/*
- * LZO1X Decompressor from MiniLZO
- *
- * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
- *
- * The full LZO package can be found at:
- * http://www.oberhumer.com/opensource/lzo/
- *
- * Changed for kernel use by:
- * Nitin Gupta <nitingupta910@xxxxxxxxx>
- * Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
- */
-
-#ifndef STATIC
-#include <linux/module.h>
-#include <linux/kernel.h>
-#endif
-
-#include <asm/unaligned.h>
-#include <linux/lzo.h>
-#include "lzodefs.h"
-
-#define HAVE_IP(x, ip_end, ip) ((size_t)(ip_end - ip) < (x))
-#define HAVE_OP(x, op_end, op) ((size_t)(op_end - op) < (x))
-#define HAVE_LB(m_pos, out, op) (m_pos < out || m_pos >= op)
-
-#define COPY4(dst, src) \
- put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
-
-int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
- unsigned char *out, size_t *out_len)
-{
- const unsigned char * const ip_end = in + in_len;
- unsigned char * const op_end = out + *out_len;
- const unsigned char *ip = in, *m_pos;
- unsigned char *op = out;
- size_t t;
-
- *out_len = 0;
-
- if (*ip > 17) {
- t = *ip++ - 17;
- if (t < 4)
- goto match_next;
- if (HAVE_OP(t, op_end, op))
- goto output_overrun;
- if (HAVE_IP(t + 1, ip_end, ip))
- goto input_overrun;
- do {
- *op++ = *ip++;
- } while (--t > 0);
- goto first_literal_run;
- }
-
- while ((ip < ip_end)) {
- t = *ip++;
- if (t >= 16)
- goto match;
- if (t == 0) {
- if (HAVE_IP(1, ip_end, ip))
- goto input_overrun;
- while (*ip == 0) {
- t += 255;
- ip++;
- if (HAVE_IP(1, ip_end, ip))
- goto input_overrun;
- }
- t += 15 + *ip++;
- }
- if (HAVE_OP(t + 3, op_end, op))
- goto output_overrun;
- if (HAVE_IP(t + 4, ip_end, ip))
- goto input_overrun;
-
- COPY4(op, ip);
- op += 4;
- ip += 4;
- if (--t > 0) {
- if (t >= 4) {
- do {
- COPY4(op, ip);
- op += 4;
- ip += 4;
- t -= 4;
- } while (t >= 4);
- if (t > 0) {
- do {
- *op++ = *ip++;
- } while (--t > 0);
- }
- } else {
- do {
- *op++ = *ip++;
- } while (--t > 0);
- }
- }
-
-first_literal_run:
- t = *ip++;
- if (t >= 16)
- goto match;
- m_pos = op - (1 + M2_MAX_OFFSET);
- m_pos -= t >> 2;
- m_pos -= *ip++ << 2;
-
- if (HAVE_LB(m_pos, out, op))
- goto lookbehind_overrun;
-
- if (HAVE_OP(3, op_end, op))
- goto output_overrun;
- *op++ = *m_pos++;
- *op++ = *m_pos++;
- *op++ = *m_pos;
-
- goto match_done;
-
- do {
-match:
- if (t >= 64) {
- m_pos = op - 1;
- m_pos -= (t >> 2) & 7;
- m_pos -= *ip++ << 3;
- t = (t >> 5) - 1;
- if (HAVE_LB(m_pos, out, op))
- goto lookbehind_overrun;
- if (HAVE_OP(t + 3 - 1, op_end, op))
- goto output_overrun;
- goto copy_match;
- } else if (t >= 32) {
- t &= 31;
- if (t == 0) {
- if (HAVE_IP(1, ip_end, ip))
- goto input_overrun;
- while (*ip == 0) {
- t += 255;
- ip++;
- if (HAVE_IP(1, ip_end, ip))
- goto input_overrun;
- }
- t += 31 + *ip++;
- }
- m_pos = op - 1;
- m_pos -= get_unaligned_le16(ip) >> 2;
- ip += 2;
- } else if (t >= 16) {
- m_pos = op;
- m_pos -= (t & 8) << 11;
-
- t &= 7;
- if (t == 0) {
- if (HAVE_IP(1, ip_end, ip))
- goto input_overrun;
- while (*ip == 0) {
- t += 255;
- ip++;
- if (HAVE_IP(1, ip_end, ip))
- goto input_overrun;
- }
- t += 7 + *ip++;
- }
- m_pos -= get_unaligned_le16(ip) >> 2;
- ip += 2;
- if (m_pos == op)
- goto eof_found;
- m_pos -= 0x4000;
- } else {
- m_pos = op - 1;
- m_pos -= t >> 2;
- m_pos -= *ip++ << 2;
-
- if (HAVE_LB(m_pos, out, op))
- goto lookbehind_overrun;
- if (HAVE_OP(2, op_end, op))
- goto output_overrun;
-
- *op++ = *m_pos++;
- *op++ = *m_pos;
- goto match_done;
- }
-
- if (HAVE_LB(m_pos, out, op))
- goto lookbehind_overrun;
- if (HAVE_OP(t + 3 - 1, op_end, op))
- goto output_overrun;
-
- if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4) {
- COPY4(op, m_pos);
- op += 4;
- m_pos += 4;
- t -= 4 - (3 - 1);
- do {
- COPY4(op, m_pos);
- op += 4;
- m_pos += 4;
- t -= 4;
- } while (t >= 4);
- if (t > 0)
- do {
- *op++ = *m_pos++;
- } while (--t > 0);
- } else {
-copy_match:
- *op++ = *m_pos++;
- *op++ = *m_pos++;
- do {
- *op++ = *m_pos++;
- } while (--t > 0);
- }
-match_done:
- t = ip[-2] & 3;
- if (t == 0)
- break;
-match_next:
- if (HAVE_OP(t, op_end, op))
- goto output_overrun;
- if (HAVE_IP(t + 1, ip_end, ip))
- goto input_overrun;
-
- *op++ = *ip++;
- if (t > 1) {
- *op++ = *ip++;
- if (t > 2)
- *op++ = *ip++;
- }
-
- t = *ip++;
- } while (ip < ip_end);
- }
-
- *out_len = op - out;
- return LZO_E_EOF_NOT_FOUND;
-
-eof_found:
- *out_len = op - out;
- return (ip == ip_end ? LZO_E_OK :
- (ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
-input_overrun:
- *out_len = op - out;
- return LZO_E_INPUT_OVERRUN;
-
-output_overrun:
- *out_len = op - out;
- return LZO_E_OUTPUT_OVERRUN;
-
-lookbehind_overrun:
- *out_len = op - out;
- return LZO_E_LOOKBEHIND_OVERRUN;
-}
-#ifndef STATIC
-EXPORT_SYMBOL_GPL(lzo1x_decompress_safe);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("LZO1X Decompressor");
-
-#endif
diff --git a/lib/lzo/lzo1x_decompress_safe.c b/lib/lzo/lzo1x_decompress_safe.c
new file mode 100644
index 0000000..8563081
--- /dev/null
+++ b/lib/lzo/lzo1x_decompress_safe.c
@@ -0,0 +1,257 @@
+/*
+ * LZO1X Decompressor from LZO
+ *
+ * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
+ *
+ * The full LZO package can be found at:
+ * http://www.oberhumer.com/opensource/lzo/
+ *
+ * Changed for Linux kernel use by:
+ * Nitin Gupta <nitingupta910@xxxxxxxxx>
+ * Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
+ */
+
+#ifndef STATIC
+#include <linux/module.h>
+#include <linux/kernel.h>
+#endif
+#include <asm/unaligned.h>
+#include <linux/lzo.h>
+#include "lzodefs.h"
+
+#define HAVE_IP(t, x) \
+ (((size_t)(ip_end - ip) >= (size_t)(t + x)) && \
+ (((t + x) >= t) && ((t + x) >= x)))
+
+#define HAVE_OP(t, x) \
+ (((size_t)(op_end - op) >= (size_t)(t + x)) && \
+ (((t + x) >= t) && ((t + x) >= x)))
+
+#define NEED_IP(t, x) \
+ do { \
+ if (!HAVE_IP(t, x)) \
+ goto input_overrun; \
+ } while (0)
+
+#define NEED_OP(t, x) \
+ do { \
+ if (!HAVE_OP(t, x)) \
+ goto output_overrun; \
+ } while (0)
+
+#define TEST_LB(m_pos) \
+ do { \
+ if ((m_pos) < out) \
+ goto lookbehind_overrun; \
+ } while (0)
+
+int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
+ unsigned char *out, size_t *out_len)
+{
+ unsigned char *op;
+ const unsigned char *ip;
+ size_t t, next;
+ size_t state = 0;
+ const unsigned char *m_pos;
+ const unsigned char * const ip_end = in + in_len;
+ unsigned char * const op_end = out + *out_len;
+
+ op = out;
+ ip = in;
+
+ if (unlikely(in_len < 3))
+ goto input_overrun;
+ if (*ip > 17) {
+ t = *ip++ - 17;
+ if (t < 4) {
+ next = t;
+ goto match_next;
+ }
+ goto copy_literal_run;
+ }
+
+ for (;;) {
+ t = *ip++;
+ if (t < 16) {
+ if (likely(state == 0)) {
+ if (unlikely(t == 0)) {
+ while (unlikely(*ip == 0)) {
+ t += 255;
+ ip++;
+ NEED_IP(1, 0);
+ }
+ t += 15 + *ip++;
+ }
+ t += 3;
+copy_literal_run:
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+ if (likely(HAVE_IP(t, 15) && HAVE_OP(t, 15))) {
+ const unsigned char *ie = ip + t;
+ unsigned char *oe = op + t;
+ do {
+ COPY8(op, ip);
+ op += 8;
+ ip += 8;
+ COPY8(op, ip);
+ op += 8;
+ ip += 8;
+ } while (ip < ie);
+ ip = ie;
+ op = oe;
+ } else
+#endif
+ {
+ NEED_OP(t, 0);
+ NEED_IP(t, 3);
+ do {
+ *op++ = *ip++;
+ } while (--t > 0);
+ }
+ state = 4;
+ continue;
+ } else if (state != 4) {
+ next = t & 3;
+ m_pos = op - 1;
+ m_pos -= t >> 2;
+ m_pos -= *ip++ << 2;
+ TEST_LB(m_pos);
+ NEED_OP(2, 0);
+ op[0] = m_pos[0];
+ op[1] = m_pos[1];
+ op += 2;
+ goto match_next;
+ } else {
+ next = t & 3;
+ m_pos = op - (1 + M2_MAX_OFFSET);
+ m_pos -= t >> 2;
+ m_pos -= *ip++ << 2;
+ t = 3;
+ }
+ } else if (t >= 64) {
+ next = t & 3;
+ m_pos = op - 1;
+ m_pos -= (t >> 2) & 7;
+ m_pos -= *ip++ << 3;
+ t = (t >> 5) - 1 + (3 - 1);
+ } else if (t >= 32) {
+ t = (t & 31) + (3 - 1);
+ if (unlikely(t == 2)) {
+ while (unlikely(*ip == 0)) {
+ t += 255;
+ ip++;
+ NEED_IP(1, 0);
+ }
+ t += 31 + *ip++;
+ NEED_IP(2, 0);
+ }
+ m_pos = op - 1;
+ next = get_unaligned_le16(ip);
+ ip += 2;
+ m_pos -= next >> 2;
+ next &= 3;
+ } else {
+ m_pos = op;
+ m_pos -= (t & 8) << 11;
+ t = (t & 7) + (3 - 1);
+ if (unlikely(t == 2)) {
+ while (unlikely(*ip == 0)) {
+ t += 255;
+ ip++;
+ NEED_IP(1, 0);
+ }
+ t += 7 + *ip++;
+ NEED_IP(2, 0);
+ }
+ next = get_unaligned_le16(ip);
+ ip += 2;
+ m_pos -= next >> 2;
+ next &= 3;
+ if (m_pos == op)
+ goto eof_found;
+ m_pos -= 0x4000;
+ }
+ TEST_LB(m_pos);
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+ if (op - m_pos >= 8) {
+ unsigned char *oe = op + t;
+ if (likely(HAVE_OP(t, 15))) {
+ do {
+ COPY8(op, m_pos);
+ op += 8;
+ m_pos += 8;
+ COPY8(op, m_pos);
+ op += 8;
+ m_pos += 8;
+ } while (op < oe);
+ op = oe;
+ if (HAVE_IP(6, 0)) {
+ state = next;
+ COPY4(op, ip);
+ op += next;
+ ip += next;
+ continue;
+ }
+ } else {
+ NEED_OP(t, 0);
+ do {
+ *op++ = *m_pos++;
+ } while (op < oe);
+ }
+ } else
+#endif
+ {
+ unsigned char *oe = op + t;
+ NEED_OP(t, 0);
+ op[0] = m_pos[0];
+ op[1] = m_pos[1];
+ op += 2;
+ m_pos += 2;
+ do {
+ *op++ = *m_pos++;
+ } while (op < oe);
+ }
+match_next:
+ state = next;
+ t = next;
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+ if (likely(HAVE_IP(6, 0) && HAVE_OP(4, 0))) {
+ COPY4(op, ip);
+ op += t;
+ ip += t;
+ } else
+#endif
+ {
+ NEED_IP(t, 3);
+ NEED_OP(t, 0);
+ while (t > 0) {
+ *op++ = *ip++;
+ t--;
+ }
+ }
+ }
+
+eof_found:
+ *out_len = op - out;
+ return (t != 3 ? LZO_E_ERROR :
+ ip == ip_end ? LZO_E_OK :
+ ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN);
+
+input_overrun:
+ *out_len = op - out;
+ return LZO_E_INPUT_OVERRUN;
+
+output_overrun:
+ *out_len = op - out;
+ return LZO_E_OUTPUT_OVERRUN;
+
+lookbehind_overrun:
+ *out_len = op - out;
+ return LZO_E_LOOKBEHIND_OVERRUN;
+}
+#ifndef STATIC
+EXPORT_SYMBOL_GPL(lzo1x_decompress_safe);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("LZO1X Decompressor");
+
+#endif
diff --git a/lib/lzo/lzodefs.h b/lib/lzo/lzodefs.h
index b6d482c..6710b83 100644
--- a/lib/lzo/lzodefs.h
+++ b/lib/lzo/lzodefs.h
@@ -1,19 +1,37 @@
/*
* lzodefs.h -- architecture, OS and compiler specific defines
*
- * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
+ * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@xxxxxxxxxxxxx>
*
* The full LZO package can be found at:
* http://www.oberhumer.com/opensource/lzo/
*
- * Changed for kernel use by:
+ * Changed for Linux kernel use by:
* Nitin Gupta <nitingupta910@xxxxxxxxx>
* Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
*/

-#define LZO_VERSION 0x2020
-#define LZO_VERSION_STRING "2.02"
-#define LZO_VERSION_DATE "Oct 17 2005"
+
+#define COPY4(dst, src) \
+ put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
+#if defined(__x86_64__)
+#define COPY8(dst, src) \
+ put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst))
+#else
+#define COPY8(dst, src) \
+ COPY4(dst, src); COPY4((dst) + 4, (src) + 4)
+#endif
+
+#if defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN)
+#error "conflicting endian definitions"
+#elif defined(__x86_64__)
+#define LZO_USE_CTZ64 1
+#define LZO_USE_CTZ32 1
+#elif defined(__i386__) || defined(__powerpc__)
+#define LZO_USE_CTZ32 1
+#elif defined(__arm__) && (__LINUX_ARM_ARCH__ >= 5)
+#define LZO_USE_CTZ32 1
+#endif

#define M1_MAX_OFFSET 0x0400
#define M2_MAX_OFFSET 0x0800
@@ -34,10 +52,8 @@
#define M3_MARKER 32
#define M4_MARKER 16

-#define D_BITS 14
-#define D_MASK ((1u << D_BITS) - 1)
+#define lzo_dict_t unsigned short
+#define D_BITS 13
+#define D_SIZE (1u << D_BITS)
+#define D_MASK (D_SIZE - 1)
#define D_HIGH ((D_MASK >> 1) + 1)
-
-#define DX2(p, s1, s2) (((((size_t)((p)[2]) << (s2)) ^ (p)[1]) \
- << (s1)) ^ (p)[0])
-#define DX3(p, s1, s2, s3) ((DX2((p)+1, s2, s3) << (s1)) ^ (p)[0])
diff --git a/lib/nlattr.c b/lib/nlattr.c
index 190ae10..521a9df 100644
--- a/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -12,6 +12,7 @@
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/string.h>
+#include <linux/ratelimit.h>
#include <linux/types.h>
#include <net/netlink.h>

@@ -197,8 +198,8 @@ int nla_parse(struct nlattr **tb, int maxtype, const struct nlattr *head,
}

if (unlikely(rem > 0))
- printk(KERN_WARNING "netlink: %d bytes leftover after parsing "
- "attributes.\n", rem);
+ pr_warn_ratelimited("netlink: %d bytes leftover after parsing attributes in process `%s'.\n",
+ rem, current->comm);

err = 0;
errout:
diff --git a/mm/highmem.c b/mm/highmem.c
index 2a07f97..09fc744 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -98,7 +98,7 @@ struct page *kmap_to_page(void *vaddr)
{
unsigned long addr = (unsigned long)vaddr;

- if (addr >= PKMAP_ADDR(0) && addr <= PKMAP_ADDR(LAST_PKMAP)) {
+ if (addr >= PKMAP_ADDR(0) && addr < PKMAP_ADDR(LAST_PKMAP)) {
int i = (addr - PKMAP_ADDR(0)) >> PAGE_SHIFT;
return pte_page(pkmap_page_table[i]);
}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index cac2441..6f886d9 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2272,6 +2272,31 @@ static void set_huge_ptep_writable(struct vm_area_struct *vma,
update_mmu_cache(vma, address, ptep);
}

+static int is_hugetlb_entry_migration(pte_t pte)
+{
+ swp_entry_t swp;
+
+ if (huge_pte_none(pte) || pte_present(pte))
+ return 0;
+ swp = pte_to_swp_entry(pte);
+ if (non_swap_entry(swp) && is_migration_entry(swp))
+ return 1;
+ else
+ return 0;
+}
+
+static int is_hugetlb_entry_hwpoisoned(pte_t pte)
+{
+ swp_entry_t swp;
+
+ if (huge_pte_none(pte) || pte_present(pte))
+ return 0;
+ swp = pte_to_swp_entry(pte);
+ if (non_swap_entry(swp) && is_hwpoison_entry(swp))
+ return 1;
+ else
+ return 0;
+}

int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
struct vm_area_struct *vma)
@@ -2299,10 +2324,26 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,

spin_lock(&dst->page_table_lock);
spin_lock_nested(&src->page_table_lock, SINGLE_DEPTH_NESTING);
- if (!huge_pte_none(huge_ptep_get(src_pte))) {
+ entry = huge_ptep_get(src_pte);
+ if (huge_pte_none(entry)) { /* skip none entry */
+ ;
+ } else if (unlikely(is_hugetlb_entry_migration(entry) ||
+ is_hugetlb_entry_hwpoisoned(entry))) {
+ swp_entry_t swp_entry = pte_to_swp_entry(entry);
+
+ if (is_write_migration_entry(swp_entry) && cow) {
+ /*
+ * COW mappings require pages in both
+ * parent and child to be set to read.
+ */
+ make_migration_entry_read(&swp_entry);
+ entry = swp_entry_to_pte(swp_entry);
+ set_huge_pte_at(src, addr, src_pte, entry);
+ }
+ set_huge_pte_at(dst, addr, dst_pte, entry);
+ } else {
if (cow)
huge_ptep_set_wrprotect(src, addr, src_pte);
- entry = huge_ptep_get(src_pte);
ptepage = pte_page(entry);
get_page(ptepage);
page_dup_rmap(ptepage);
@@ -2317,32 +2358,6 @@ nomem:
return -ENOMEM;
}

-static int is_hugetlb_entry_migration(pte_t pte)
-{
- swp_entry_t swp;
-
- if (huge_pte_none(pte) || pte_present(pte))
- return 0;
- swp = pte_to_swp_entry(pte);
- if (non_swap_entry(swp) && is_migration_entry(swp))
- return 1;
- else
- return 0;
-}
-
-static int is_hugetlb_entry_hwpoisoned(pte_t pte)
-{
- swp_entry_t swp;
-
- if (huge_pte_none(pte) || pte_present(pte))
- return 0;
- swp = pte_to_swp_entry(pte);
- if (non_swap_entry(swp) && is_hwpoison_entry(swp))
- return 1;
- else
- return 0;
-}
-
void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end, struct page *ref_page)
{
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 4d1e637..2b5bcc9 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -566,24 +566,23 @@ static inline int check_pgd_range(struct vm_area_struct *vma,
* If pagelist != NULL then isolate pages from the LRU and
* put them on the pagelist.
*/
-static struct vm_area_struct *
+static int
check_range(struct mm_struct *mm, unsigned long start, unsigned long end,
const nodemask_t *nodes, unsigned long flags, void *private)
{
- int err;
- struct vm_area_struct *first, *vma, *prev;
-
+ int err = 0;
+ struct vm_area_struct *vma, *prev;

- first = find_vma(mm, start);
- if (!first)
- return ERR_PTR(-EFAULT);
+ vma = find_vma(mm, start);
+ if (!vma)
+ return -EFAULT;
prev = NULL;
- for (vma = first; vma && vma->vm_start < end; vma = vma->vm_next) {
+ for (; vma && vma->vm_start < end; vma = vma->vm_next) {
if (!(flags & MPOL_MF_DISCONTIG_OK)) {
if (!vma->vm_next && vma->vm_end < end)
- return ERR_PTR(-EFAULT);
+ return -EFAULT;
if (prev && prev->vm_end < vma->vm_start)
- return ERR_PTR(-EFAULT);
+ return -EFAULT;
}
if (!is_vm_hugetlb_page(vma) &&
((flags & MPOL_MF_STRICT) ||
@@ -597,14 +596,12 @@ check_range(struct mm_struct *mm, unsigned long start, unsigned long end,
start = vma->vm_start;
err = check_pgd_range(vma, start, endvma, nodes,
flags, private);
- if (err) {
- first = ERR_PTR(err);
+ if (err)
break;
- }
}
prev = vma;
}
- return first;
+ return err;
}

/*
@@ -945,15 +942,18 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
nodemask_t nmask;
LIST_HEAD(pagelist);
int err = 0;
- struct vm_area_struct *vma;

nodes_clear(nmask);
node_set(source, nmask);

- vma = check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask,
+ /*
+ * This does not "check" the range but isolates all pages that
+ * need migration. Between passing in the full user address
+ * space range and MPOL_MF_DISCONTIG_OK, this call can not fail.
+ */
+ VM_BUG_ON(!(flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)));
+ check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask,
flags | MPOL_MF_DISCONTIG_OK, &pagelist);
- if (IS_ERR(vma))
- return PTR_ERR(vma);

if (!list_empty(&pagelist)) {
err = migrate_pages(&pagelist, new_node_page, dest,
@@ -1057,16 +1057,17 @@ out:

/*
* Allocate a new page for page migration based on vma policy.
- * Start assuming that page is mapped by vma pointed to by @private.
+ * Start by assuming the page is mapped by the same vma as contains @start.
* Search forward from there, if not. N.B., this assumes that the
* list of pages handed to migrate_pages()--which is how we get here--
* is in virtual address order.
*/
-static struct page *new_vma_page(struct page *page, unsigned long private, int **x)
+static struct page *new_page(struct page *page, unsigned long start, int **x)
{
- struct vm_area_struct *vma = (struct vm_area_struct *)private;
+ struct vm_area_struct *vma;
unsigned long uninitialized_var(address);

+ vma = find_vma(current->mm, start);
while (vma) {
address = page_address_in_vma(page, vma);
if (address != -EFAULT)
@@ -1092,7 +1093,7 @@ int do_migrate_pages(struct mm_struct *mm,
return -ENOSYS;
}

-static struct page *new_vma_page(struct page *page, unsigned long private, int **x)
+static struct page *new_page(struct page *page, unsigned long start, int **x)
{
return NULL;
}
@@ -1102,7 +1103,6 @@ static long do_mbind(unsigned long start, unsigned long len,
unsigned short mode, unsigned short mode_flags,
nodemask_t *nmask, unsigned long flags)
{
- struct vm_area_struct *vma;
struct mm_struct *mm = current->mm;
struct mempolicy *new;
unsigned long end;
@@ -1166,19 +1166,16 @@ static long do_mbind(unsigned long start, unsigned long len,
if (err)
goto mpol_out;

- vma = check_range(mm, start, end, nmask,
+ err = check_range(mm, start, end, nmask,
flags | MPOL_MF_INVERT, &pagelist);
-
- err = PTR_ERR(vma);
- if (!IS_ERR(vma)) {
+ if (!err) {
int nr_failed = 0;

err = mbind_range(mm, start, end, new);

if (!list_empty(&pagelist)) {
- nr_failed = migrate_pages(&pagelist, new_vma_page,
- (unsigned long)vma,
- false, true);
+ nr_failed = migrate_pages(&pagelist, new_page,
+ start, false, true);
if (nr_failed)
putback_lru_pages(&pagelist);
}
diff --git a/mm/rmap.c b/mm/rmap.c
index 9ac405b..f3f6fd3 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -103,6 +103,7 @@ static inline void anon_vma_free(struct anon_vma *anon_vma)
* LOCK should suffice since the actual taking of the lock must
* happen _before_ what follows.
*/
+ might_sleep();
if (mutex_is_locked(&anon_vma->root->mutex)) {
anon_vma_lock(anon_vma);
anon_vma_unlock(anon_vma);
@@ -434,8 +435,9 @@ struct anon_vma *page_get_anon_vma(struct page *page)
* above cannot corrupt).
*/
if (!page_mapped(page)) {
+ rcu_read_unlock();
put_anon_vma(anon_vma);
- anon_vma = NULL;
+ return NULL;
}
out:
rcu_read_unlock();
@@ -485,9 +487,9 @@ struct anon_vma *page_lock_anon_vma(struct page *page)
}

if (!page_mapped(page)) {
+ rcu_read_unlock();
put_anon_vma(anon_vma);
- anon_vma = NULL;
- goto out;
+ return NULL;
}

/* we pinned the anon_vma, its safe to sleep */
@@ -1669,10 +1671,9 @@ void __put_anon_vma(struct anon_vma *anon_vma)
{
struct anon_vma *root = anon_vma->root;

+ anon_vma_free(anon_vma);
if (root != anon_vma && atomic_dec_and_test(&root->refcount))
anon_vma_free(root);
-
- anon_vma_free(anon_vma);
}

#ifdef CONFIG_MIGRATION
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 313381c..ab98dc6 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3016,7 +3016,10 @@ static int kswapd(void *p)
}
}

+ tsk->flags &= ~(PF_MEMALLOC | PF_SWAPWRITE | PF_KSWAPD);
current->reclaim_state = NULL;
+ lockdep_clear_current_reclaim_state();
+
return 0;
}

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 4d99d42..f456645 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -617,7 +617,7 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
/* If we're already encrypted set the REAUTH_PEND flag,
* otherwise set the ENCRYPT_PEND.
*/
- if (conn->key_type != 0xff)
+ if (conn->link_mode & HCI_LM_ENCRYPT)
set_bit(HCI_CONN_REAUTH_PEND, &conn->pend);
else
set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 7a157b3..d99075a 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2690,8 +2690,11 @@ static inline void hci_user_confirm_request_evt(struct hci_dev *hdev,

/* If we're not the initiators request authorization to
* proceed from user space (mgmt_user_confirm with
- * confirm_hint set to 1). */
- if (!test_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
+ * confirm_hint set to 1). The exception is if neither
+ * side had MITM in which case we do auto-accept.
+ */
+ if (!test_bit(HCI_CONN_AUTH_PEND, &conn->pend) &&
+ (loc_mitm || rem_mitm)) {
BT_DBG("Confirming auto-accept as acceptor");
confirm_hint = 1;
goto confirm;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 9204d9b..7121d9b 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -655,7 +655,7 @@ int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask)
skb_shinfo(skb)->tx_flags &= ~SKBTX_DEV_ZEROCOPY;
return 0;
}
-
+EXPORT_SYMBOL_GPL(skb_copy_ubufs);

/**
* skb_clone - duplicate an sk_buff
@@ -2698,6 +2698,9 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
skb_put(nskb, hsize), hsize);

while (pos < offset + len && i < nfrags) {
+ if (unlikely(skb_orphan_frags(skb, GFP_ATOMIC)))
+ goto err;
+
*frag = skb_shinfo(skb)->frags[i];
__skb_frag_ref(frag);
size = skb_frag_size(frag);
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 5dc5137..7ce6d9f 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -909,4 +909,5 @@ static void __exit ipip_fini(void)
module_init(ipip_init);
module_exit(ipip_fini);
MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("ipip");
MODULE_ALIAS_NETDEV("tunl0");
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 7871cc6..14753d3 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -612,7 +612,7 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
{
static atomic_t ipv6_fragmentation_id;
- int old, new;
+ int ident;

if (rt && !(rt->dst.flags & DST_NOPEER)) {
struct inet_peer *peer;
@@ -625,13 +625,8 @@ void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
return;
}
}
- do {
- old = atomic_read(&ipv6_fragmentation_id);
- new = old + 1;
- if (!new)
- new = 1;
- } while (atomic_cmpxchg(&ipv6_fragmentation_id, old, new) != old);
- fhdr->identification = htonl(new);
+ ident = atomic_inc_return(&ipv6_fragmentation_id);
+ fhdr->identification = htonl(ident);
}

int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index d19f499..ae32ff7 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -57,6 +57,7 @@
MODULE_AUTHOR("Ville Nuorvala");
MODULE_DESCRIPTION("IPv6 tunneling device");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("ip6tnl");
MODULE_ALIAS_NETDEV("ip6tnl0");

#ifdef IP6_TNL_DEBUG
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 72a939d..52ce196 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1293,4 +1293,5 @@ static int __init sit_init(void)
module_init(sit_init);
module_exit(sit_cleanup);
MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("sit");
MODULE_ALIAS_NETDEV("sit0");
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 9352819..880a55d 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -33,8 +33,7 @@ static ssize_t ieee80211_if_read(
ssize_t ret = -EINVAL;

read_lock(&dev_base_lock);
- if (sdata->dev->reg_state == NETREG_REGISTERED)
- ret = (*format)(sdata, buf, sizeof(buf));
+ ret = (*format)(sdata, buf, sizeof(buf));
read_unlock(&dev_base_lock);

if (ret >= 0)
@@ -62,8 +61,7 @@ static ssize_t ieee80211_if_write(

ret = -ENODEV;
rtnl_lock();
- if (sdata->dev->reg_state == NETREG_REGISTERED)
- ret = (*write)(sdata, buf, count);
+ ret = (*write)(sdata, buf, count);
rtnl_unlock();

freebuf:
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 9e20cb8..1c018d1 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -914,6 +914,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,

sdata->u.ibss.privacy = params->privacy;
sdata->u.ibss.basic_rates = params->basic_rates;
+ sdata->u.ibss.last_scan_completed = jiffies;
memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate,
sizeof(params->mcast_rate));

diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 3c04692..25b207b 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -389,7 +389,7 @@ void sctp_association_free(struct sctp_association *asoc)
/* Only real associations count against the endpoint, so
* don't bother for if this is a temporary association.
*/
- if (!asoc->temp) {
+ if (!list_empty(&asoc->asocs)) {
list_del(&asoc->asocs);

/* Decrement the backlog value for a TCP-style listening
diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
index 54e35c1..5e29610 100644
--- a/scripts/recordmcount.h
+++ b/scripts/recordmcount.h
@@ -163,11 +163,11 @@ static int mcount_adjust = 0;

static int MIPS_is_fake_mcount(Elf_Rel const *rp)
{
- static Elf_Addr old_r_offset;
+ static Elf_Addr old_r_offset = ~(Elf_Addr)0;
Elf_Addr current_r_offset = _w(rp->r_offset);
int is_fake;

- is_fake = old_r_offset &&
+ is_fake = (old_r_offset != ~(Elf_Addr)0) &&
(current_r_offset - old_r_offset == MIPS_FAKEMCOUNT_OFFSET);
old_r_offset = current_r_offset;

diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index 92d3d99..3439872 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -207,12 +207,20 @@ static int evm_protect_xattr(struct dentry *dentry, const char *xattr_name,
* @xattr_value: pointer to the new extended attribute value
* @xattr_value_len: pointer to the new extended attribute value length
*
- * Updating 'security.evm' requires CAP_SYS_ADMIN privileges and that
- * the current value is valid.
+ * Before allowing the 'security.evm' protected xattr to be updated,
+ * verify the existing value is valid. As only the kernel should have
+ * access to the EVM encrypted key needed to calculate the HMAC, prevent
+ * userspace from writing HMAC value. Writing 'security.evm' requires
+ * requires CAP_SYS_ADMIN privileges.
*/
int evm_inode_setxattr(struct dentry *dentry, const char *xattr_name,
const void *xattr_value, size_t xattr_value_len)
{
+ const struct evm_ima_xattr_data *xattr_data = xattr_value;
+
+ if ((strcmp(xattr_name, XATTR_NAME_EVM) == 0)
+ && (xattr_data->type == EVM_XATTR_HMAC))
+ return -EPERM;
return evm_protect_xattr(dentry, xattr_name, xattr_value,
xattr_value_len);
}
diff --git a/sound/core/control.c b/sound/core/control.c
index 5511307..9210594 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -288,6 +288,10 @@ static bool snd_ctl_remove_numid_conflict(struct snd_card *card,
{
struct snd_kcontrol *kctl;

+ /* Make sure that the ids assigned to the control do not wrap around */
+ if (card->last_numid >= UINT_MAX - count)
+ card->last_numid = 0;
+
list_for_each_entry(kctl, &card->controls, list) {
if (kctl->id.numid < card->last_numid + 1 + count &&
kctl->id.numid + kctl->count > card->last_numid + 1) {
@@ -329,6 +333,7 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol)
{
struct snd_ctl_elem_id id;
unsigned int idx;
+ unsigned int count;
int err = -EINVAL;

if (! kcontrol)
@@ -336,6 +341,9 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol)
if (snd_BUG_ON(!card || !kcontrol->info))
goto error;
id = kcontrol->id;
+ if (id.index > UINT_MAX - kcontrol->count)
+ goto error;
+
down_write(&card->controls_rwsem);
if (snd_ctl_find_id(card, &id)) {
up_write(&card->controls_rwsem);
@@ -357,8 +365,9 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol)
card->controls_count += kcontrol->count;
kcontrol->id.numid = card->last_numid + 1;
card->last_numid += kcontrol->count;
+ count = kcontrol->count;
up_write(&card->controls_rwsem);
- for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++)
+ for (idx = 0; idx < count; idx++, id.index++, id.numid++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id);
return 0;

@@ -387,6 +396,7 @@ int snd_ctl_replace(struct snd_card *card, struct snd_kcontrol *kcontrol,
bool add_on_replace)
{
struct snd_ctl_elem_id id;
+ unsigned int count;
unsigned int idx;
struct snd_kcontrol *old;
int ret;
@@ -422,8 +432,9 @@ add:
card->controls_count += kcontrol->count;
kcontrol->id.numid = card->last_numid + 1;
card->last_numid += kcontrol->count;
+ count = kcontrol->count;
up_write(&card->controls_rwsem);
- for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++)
+ for (idx = 0; idx < count; idx++, id.index++, id.numid++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id);
return 0;

@@ -894,9 +905,9 @@ static int snd_ctl_elem_write(struct snd_card *card, struct snd_ctl_file *file,
result = kctl->put(kctl, control);
}
if (result > 0) {
+ struct snd_ctl_elem_id id = control->id;
up_read(&card->controls_rwsem);
- snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
- &control->id);
+ snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &id);
return 0;
}
}
@@ -988,6 +999,7 @@ static int snd_ctl_elem_unlock(struct snd_ctl_file *file,

struct user_element {
struct snd_ctl_elem_info info;
+ struct snd_card *card;
void *elem_data; /* element data */
unsigned long elem_data_size; /* size of element data in bytes */
void *tlv_data; /* TLV data */
@@ -1031,7 +1043,9 @@ static int snd_ctl_elem_user_get(struct snd_kcontrol *kcontrol,
{
struct user_element *ue = kcontrol->private_data;

+ mutex_lock(&ue->card->user_ctl_lock);
memcpy(&ucontrol->value, ue->elem_data, ue->elem_data_size);
+ mutex_unlock(&ue->card->user_ctl_lock);
return 0;
}

@@ -1040,10 +1054,12 @@ static int snd_ctl_elem_user_put(struct snd_kcontrol *kcontrol,
{
int change;
struct user_element *ue = kcontrol->private_data;
-
+
+ mutex_lock(&ue->card->user_ctl_lock);
change = memcmp(&ucontrol->value, ue->elem_data, ue->elem_data_size) != 0;
if (change)
memcpy(ue->elem_data, &ucontrol->value, ue->elem_data_size);
+ mutex_unlock(&ue->card->user_ctl_lock);
return change;
}

@@ -1063,19 +1079,32 @@ static int snd_ctl_elem_user_tlv(struct snd_kcontrol *kcontrol,
new_data = memdup_user(tlv, size);
if (IS_ERR(new_data))
return PTR_ERR(new_data);
+ mutex_lock(&ue->card->user_ctl_lock);
change = ue->tlv_data_size != size;
if (!change)
change = memcmp(ue->tlv_data, new_data, size);
kfree(ue->tlv_data);
ue->tlv_data = new_data;
ue->tlv_data_size = size;
+ mutex_unlock(&ue->card->user_ctl_lock);
} else {
- if (! ue->tlv_data_size || ! ue->tlv_data)
- return -ENXIO;
- if (size < ue->tlv_data_size)
- return -ENOSPC;
+ int ret = 0;
+
+ mutex_lock(&ue->card->user_ctl_lock);
+ if (!ue->tlv_data_size || !ue->tlv_data) {
+ ret = -ENXIO;
+ goto err_unlock;
+ }
+ if (size < ue->tlv_data_size) {
+ ret = -ENOSPC;
+ goto err_unlock;
+ }
if (copy_to_user(tlv, ue->tlv_data, ue->tlv_data_size))
- return -EFAULT;
+ ret = -EFAULT;
+err_unlock:
+ mutex_unlock(&ue->card->user_ctl_lock);
+ if (ret)
+ return ret;
}
return change;
}
@@ -1133,8 +1162,6 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
struct user_element *ue;
int idx, err;

- if (!replace && card->user_ctl_count >= MAX_USER_CONTROLS)
- return -ENOMEM;
if (info->count < 1)
return -EINVAL;
access = info->access == 0 ? SNDRV_CTL_ELEM_ACCESS_READWRITE :
@@ -1143,21 +1170,16 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE));
info->id.numid = 0;
memset(&kctl, 0, sizeof(kctl));
- down_write(&card->controls_rwsem);
- _kctl = snd_ctl_find_id(card, &info->id);
- err = 0;
- if (_kctl) {
- if (replace)
- err = snd_ctl_remove(card, _kctl);
- else
- err = -EBUSY;
- } else {
- if (replace)
- err = -ENOENT;
+
+ if (replace) {
+ err = snd_ctl_remove_user_ctl(file, &info->id);
+ if (err)
+ return err;
}
- up_write(&card->controls_rwsem);
- if (err < 0)
- return err;
+
+ if (card->user_ctl_count >= MAX_USER_CONTROLS)
+ return -ENOMEM;
+
memcpy(&kctl.id, &info->id, sizeof(info->id));
kctl.count = info->owner ? info->owner : 1;
access |= SNDRV_CTL_ELEM_ACCESS_USER;
@@ -1207,6 +1229,7 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
ue = kzalloc(sizeof(struct user_element) + private_size, GFP_KERNEL);
if (ue == NULL)
return -ENOMEM;
+ ue->card = card;
ue->info = *info;
ue->info.access = 0;
ue->elem_data = (char *)ue + sizeof(*ue);
@@ -1318,8 +1341,9 @@ static int snd_ctl_tlv_ioctl(struct snd_ctl_file *file,
}
err = kctl->tlv.c(kctl, op_flag, tlv.length, _tlv->tlv);
if (err > 0) {
+ struct snd_ctl_elem_id id = kctl->id;
up_read(&card->controls_rwsem);
- snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_TLV, &kctl->id);
+ snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_TLV, &id);
return 0;
}
} else {
diff --git a/sound/core/init.c b/sound/core/init.c
index fa0f35b..6333f8b 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -207,6 +207,7 @@ int snd_card_create(int idx, const char *xid,
INIT_LIST_HEAD(&card->devices);
init_rwsem(&card->controls_rwsem);
rwlock_init(&card->ctl_files_rwlock);
+ mutex_init(&card->user_ctl_lock);
INIT_LIST_HEAD(&card->controls);
INIT_LIST_HEAD(&card->ctl_files);
spin_lock_init(&card->files_lock);
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index d307adb..400168e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4920,6 +4920,7 @@ enum {
ALC269_FIXUP_STEREO_DMIC,
ALC269_FIXUP_QUANTA_MUTE,
ALC269_FIXUP_LIFEBOOK,
+ ALC269_FIXUP_LIFEBOOK_EXTMIC,
ALC269_FIXUP_AMIC,
ALC269_FIXUP_DMIC,
ALC269VB_FIXUP_AMIC,
@@ -5008,6 +5009,13 @@ static const struct alc_fixup alc269_fixups[] = {
.chained = true,
.chain_id = ALC269_FIXUP_QUANTA_MUTE
},
+ [ALC269_FIXUP_LIFEBOOK_EXTMIC] = {
+ .type = ALC_FIXUP_PINS,
+ .v.pins = (const struct alc_pincfg[]) {
+ { 0x19, 0x01a1903c }, /* headset mic, with jack detect */
+ { }
+ },
+ },
[ALC269_FIXUP_AMIC] = {
.type = ALC_FIXUP_PINS,
.v.pins = (const struct alc_pincfg[]) {
@@ -5079,6 +5087,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
SND_PCI_QUIRK_VENDOR(0x1025, "Acer Aspire", ALC271_FIXUP_DMIC),
SND_PCI_QUIRK(0x10cf, 0x1475, "Lifebook", ALC269_FIXUP_LIFEBOOK),
+ SND_PCI_QUIRK(0x10cf, 0x1845, "Lifebook U904", ALC269_FIXUP_LIFEBOOK_EXTMIC),
SND_PCI_QUIRK(0x17aa, 0x20f2, "Thinkpad SL410/510", ALC269_FIXUP_SKU_IGNORE),
SND_PCI_QUIRK(0x17aa, 0x215e, "Thinkpad L512", ALC269_FIXUP_SKU_IGNORE),
SND_PCI_QUIRK(0x17aa, 0x21b8, "Thinkpad Edge 14", ALC269_FIXUP_SKU_IGNORE),
@@ -6056,6 +6065,7 @@ static const struct hda_codec_preset snd_hda_preset_realtek[] = {
{ .id = 0x10ec0670, .name = "ALC670", .patch = patch_alc662 },
{ .id = 0x10ec0671, .name = "ALC671", .patch = patch_alc662 },
{ .id = 0x10ec0680, .name = "ALC680", .patch = patch_alc680 },
+ { .id = 0x10ec0867, .name = "ALC891", .patch = patch_alc882 },
{ .id = 0x10ec0880, .name = "ALC880", .patch = patch_alc880 },
{ .id = 0x10ec0882, .name = "ALC882", .patch = patch_alc882 },
{ .id = 0x10ec0883, .name = "ALC883", .patch = patch_alc882 },

Attachment: signature.asc
Description: This is a digitally signed message part

Next message: ethan zhao: "Re: [PATCH NET-NEXT V2] netxen: fix ethtool rx_dropped information in ethtool get_ethtool_stats()"
Previous message: David Miller: "Re: [PATCH] appletalk: Fix socket referencing in skb"
In reply to: Ben Hutchings: "Re: [PATCH 3.2 000/125] 3.2.61-rc1 review"
Next in thread: Guenter Roeck: "Re: [PATCH 3.2 000/125] 3.2.61-rc1 review"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]