[GIT PULL] s390 patches for 2.6.34-rc5
From: Martin Schwidefsky
Date: Thu Apr 22 2010 - 11:23:33 EST
Hi Linus,
please pull from 'for-linus' branch of
git://git390.marist.edu/pub/scm/linux-2.6.git for-linus
to receive the following bug fixes:
Hendrik Brueckner (1):
[S390] vdso: use ntp adjusted clock multiplier
Michael Holzheu (1):
[S390] zcore: Fix reipl device detection
Sebastian Ott (3):
[S390] cio: allow enable_facility from outside init functions
[S390] add hook to reenable mss after hibernation
[S390] cio: use exception-save stsch
Stefan Haberland (1):
[S390] dasd: fix endless loop in erp
arch/s390/include/asm/vdso.h | 1 +
arch/s390/kernel/asm-offsets.c | 1 +
arch/s390/kernel/swsusp_asm64.S | 3 +++
arch/s390/kernel/time.c | 1 +
arch/s390/kernel/vdso32/clock_gettime.S | 12 ++++++------
arch/s390/kernel/vdso32/gettimeofday.S | 6 +++---
arch/s390/kernel/vdso64/clock_gettime.S | 4 ++--
arch/s390/kernel/vdso64/gettimeofday.S | 2 +-
drivers/s390/block/dasd.c | 3 ++-
drivers/s390/block/dasd_3990_erp.c | 7 ++++++-
drivers/s390/char/zcore.c | 6 +-----
drivers/s390/cio/chsc.c | 29 ++++++++++++++---------------
drivers/s390/cio/chsc_sch.c | 2 +-
drivers/s390/cio/cio.c | 18 +++++++++---------
drivers/s390/cio/css.c | 16 ++++++++--------
drivers/s390/cio/device_fsm.c | 2 +-
16 files changed, 60 insertions(+), 53 deletions(-)
diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
index 4a76d94..533f357 100644
--- a/arch/s390/include/asm/vdso.h
+++ b/arch/s390/include/asm/vdso.h
@@ -29,6 +29,7 @@ struct vdso_data {
__u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */
__u32 tz_dsttime; /* Type of dst correction 0x34 */
__u32 ectg_available;
+ __u32 ntp_mult; /* NTP adjusted multiplier 0x3C */
};
struct vdso_per_cpu_data {
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index 08db736..a094089 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -61,6 +61,7 @@ int main(void)
DEFINE(__VDSO_WTOM_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
DEFINE(__VDSO_TIMEZONE, offsetof(struct vdso_data, tz_minuteswest));
DEFINE(__VDSO_ECTG_OK, offsetof(struct vdso_data, ectg_available));
+ DEFINE(__VDSO_NTP_MULT, offsetof(struct vdso_data, ntp_mult));
DEFINE(__VDSO_ECTG_BASE, offsetof(struct vdso_per_cpu_data, ectg_timer_base));
DEFINE(__VDSO_ECTG_USER, offsetof(struct vdso_per_cpu_data, ectg_user_time));
/* constants used by the vdso */
diff --git a/arch/s390/kernel/swsusp_asm64.S b/arch/s390/kernel/swsusp_asm64.S
index b354427..c56d3f5 100644
--- a/arch/s390/kernel/swsusp_asm64.S
+++ b/arch/s390/kernel/swsusp_asm64.S
@@ -256,6 +256,9 @@ restore_registers:
lghi %r2,0
brasl %r14,arch_set_page_states
+ /* Reinitialize the channel subsystem */
+ brasl %r14,channel_subsystem_reinit
+
/* Return 0 */
lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15)
lghi %r2,0
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index fba6dec..d906bf1 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -221,6 +221,7 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock,
vdso_data->xtime_clock_nsec = wall_time->tv_nsec;
vdso_data->wtom_clock_sec = wall_to_monotonic.tv_sec;
vdso_data->wtom_clock_nsec = wall_to_monotonic.tv_nsec;
+ vdso_data->ntp_mult = mult;
smp_wmb();
++vdso_data->tb_update_count;
}
diff --git a/arch/s390/kernel/vdso32/clock_gettime.S b/arch/s390/kernel/vdso32/clock_gettime.S
index 4a98909..9696439 100644
--- a/arch/s390/kernel/vdso32/clock_gettime.S
+++ b/arch/s390/kernel/vdso32/clock_gettime.S
@@ -38,13 +38,13 @@ __kernel_clock_gettime:
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,2f
ahi %r0,-1
-2: mhi %r0,1000 /* cyc2ns(clock,cycle_delta) */
+2: ms %r0,__VDSO_NTP_MULT(%r5) /* cyc2ns(clock,cycle_delta) */
lr %r2,%r0
- lhi %r0,1000
+ l %r0,__VDSO_NTP_MULT(%r5)
ltr %r1,%r1
mr %r0,%r0
jnm 3f
- ahi %r0,1000
+ a %r0,__VDSO_NTP_MULT(%r5)
3: alr %r0,%r2
srdl %r0,12
al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */
@@ -86,13 +86,13 @@ __kernel_clock_gettime:
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,12f
ahi %r0,-1
-12: mhi %r0,1000 /* cyc2ns(clock,cycle_delta) */
+12: ms %r0,__VDSO_NTP_MULT(%r5) /* cyc2ns(clock,cycle_delta) */
lr %r2,%r0
- lhi %r0,1000
+ l %r0,__VDSO_NTP_MULT(%r5)
ltr %r1,%r1
mr %r0,%r0
jnm 13f
- ahi %r0,1000
+ a %r0,__VDSO_NTP_MULT(%r5)
13: alr %r0,%r2
srdl %r0,12
al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */
diff --git a/arch/s390/kernel/vdso32/gettimeofday.S b/arch/s390/kernel/vdso32/gettimeofday.S
index ad8acfc..2d36331 100644
--- a/arch/s390/kernel/vdso32/gettimeofday.S
+++ b/arch/s390/kernel/vdso32/gettimeofday.S
@@ -35,13 +35,13 @@ __kernel_gettimeofday:
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,3f
ahi %r0,-1
-3: mhi %r0,1000 /* cyc2ns(clock,cycle_delta) */
+3: ms %r0,__VDSO_NTP_MULT(%r5) /* cyc2ns(clock,cycle_delta) */
st %r0,24(%r15)
- lhi %r0,1000
+ l %r0,__VDSO_NTP_MULT(%r5)
ltr %r1,%r1
mr %r0,%r0
jnm 4f
- ahi %r0,1000
+ a %r0,__VDSO_NTP_MULT(%r5)
4: al %r0,24(%r15)
srdl %r0,12
al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */
diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S
index 49106c6..f404678 100644
--- a/arch/s390/kernel/vdso64/clock_gettime.S
+++ b/arch/s390/kernel/vdso64/clock_gettime.S
@@ -36,7 +36,7 @@ __kernel_clock_gettime:
stck 48(%r15) /* Store TOD clock */
lg %r1,48(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
- mghi %r1,1000
+ msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */
srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */
lg %r0,__VDSO_XTIME_SEC(%r5)
@@ -64,7 +64,7 @@ __kernel_clock_gettime:
stck 48(%r15) /* Store TOD clock */
lg %r1,48(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
- mghi %r1,1000
+ msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */
srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */
lg %r0,__VDSO_XTIME_SEC(%r5)
diff --git a/arch/s390/kernel/vdso64/gettimeofday.S b/arch/s390/kernel/vdso64/gettimeofday.S
index f873e75..36ee674 100644
--- a/arch/s390/kernel/vdso64/gettimeofday.S
+++ b/arch/s390/kernel/vdso64/gettimeofday.S
@@ -31,7 +31,7 @@ __kernel_gettimeofday:
stck 48(%r15) /* Store TOD clock */
lg %r1,48(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
- mghi %r1,1000
+ msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */
srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime.tv_nsec */
lg %r0,__VDSO_XTIME_SEC(%r5) /* xtime.tv_sec */
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index bbea90b..acf222f 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1899,7 +1899,8 @@ restart:
/* Process requests that may be recovered */
if (cqr->status == DASD_CQR_NEED_ERP) {
erp_fn = base->discipline->erp_action(cqr);
- erp_fn(cqr);
+ if (IS_ERR(erp_fn(cqr)))
+ continue;
goto restart;
}
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index 6927e75..6632649 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -2309,7 +2309,7 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr)
cqr->retries);
dasd_block_set_timer(device->block, (HZ << 3));
}
- return cqr;
+ return erp;
}
ccw = cqr->cpaddr;
@@ -2372,6 +2372,9 @@ dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr)
/* add erp and initialize with default TIC */
erp = dasd_3990_erp_add_erp(cqr);
+ if (IS_ERR(erp))
+ return erp;
+
/* inspect sense, determine specific ERP if possible */
if (erp != cqr) {
@@ -2711,6 +2714,8 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr)
if (erp == NULL) {
/* no matching erp found - set up erp */
erp = dasd_3990_erp_additional_erp(cqr);
+ if (IS_ERR(erp))
+ return erp;
} else {
/* matching erp found - set all leading erp's to DONE */
erp = dasd_3990_erp_handle_match_erp(cqr, erp);
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 18daf16..7217966 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -638,11 +638,7 @@ static int __init zcore_reipl_init(void)
rc = memcpy_hsa_kernel(ipl_block, ipib_info.ipib, PAGE_SIZE);
else
rc = memcpy_real(ipl_block, (void *) ipib_info.ipib, PAGE_SIZE);
- if (rc) {
- free_page((unsigned long) ipl_block);
- return rc;
- }
- if (csum_partial(ipl_block, ipl_block->hdr.len, 0) !=
+ if (rc || csum_partial(ipl_block, ipl_block->hdr.len, 0) !=
ipib_info.checksum) {
TRACE("Checksum does not match\n");
free_page((unsigned long) ipl_block);
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 4038f5b..ce7cb87 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -29,6 +29,7 @@
#include "chsc.h"
static void *sei_page;
+static DEFINE_SPINLOCK(sda_lock);
/**
* chsc_error_from_response() - convert a chsc response to an error
@@ -832,11 +833,10 @@ void __init chsc_free_sei_area(void)
kfree(sei_page);
}
-int __init
-chsc_enable_facility(int operation_code)
+int chsc_enable_facility(int operation_code)
{
int ret;
- struct {
+ static struct {
struct chsc_header request;
u8 reserved1:4;
u8 format:4;
@@ -849,33 +849,32 @@ chsc_enable_facility(int operation_code)
u32 reserved5:4;
u32 format2:4;
u32 reserved6:24;
- } __attribute__ ((packed)) *sda_area;
+ } __attribute__ ((packed, aligned(4096))) sda_area;
- sda_area = (void *)get_zeroed_page(GFP_KERNEL|GFP_DMA);
- if (!sda_area)
- return -ENOMEM;
- sda_area->request.length = 0x0400;
- sda_area->request.code = 0x0031;
- sda_area->operation_code = operation_code;
+ spin_lock(&sda_lock);
+ memset(&sda_area, 0, sizeof(sda_area));
+ sda_area.request.length = 0x0400;
+ sda_area.request.code = 0x0031;
+ sda_area.operation_code = operation_code;
- ret = chsc(sda_area);
+ ret = chsc(&sda_area);
if (ret > 0) {
ret = (ret == 3) ? -ENODEV : -EBUSY;
goto out;
}
- switch (sda_area->response.code) {
+ switch (sda_area.response.code) {
case 0x0101:
ret = -EOPNOTSUPP;
break;
default:
- ret = chsc_error_from_response(sda_area->response.code);
+ ret = chsc_error_from_response(sda_area.response.code);
}
if (ret != 0)
CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n",
- operation_code, sda_area->response.code);
+ operation_code, sda_area.response.code);
out:
- free_page((unsigned long)sda_area);
+ spin_unlock(&sda_lock);
return ret;
}
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 404f630..3b6f4ad 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -124,7 +124,7 @@ static int chsc_subchannel_prepare(struct subchannel *sch)
* since we don't have a way to clear the subchannel and
* cannot disable it with a request running.
*/
- cc = stsch(sch->schid, &schib);
+ cc = stsch_err(sch->schid, &schib);
if (!cc && scsw_stctl(&schib.scsw))
return -EAGAIN;
return 0;
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index f736cdc..5feea1a 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -361,7 +361,7 @@ int cio_commit_config(struct subchannel *sch)
struct schib schib;
int ccode, retry, ret = 0;
- if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib))
+ if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib))
return -ENODEV;
for (retry = 0; retry < 5; retry++) {
@@ -372,7 +372,7 @@ int cio_commit_config(struct subchannel *sch)
return ccode;
switch (ccode) {
case 0: /* successful */
- if (stsch(sch->schid, &schib) ||
+ if (stsch_err(sch->schid, &schib) ||
!css_sch_is_valid(&schib))
return -ENODEV;
if (cio_check_config(sch, &schib)) {
@@ -404,7 +404,7 @@ int cio_update_schib(struct subchannel *sch)
{
struct schib schib;
- if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib))
+ if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib))
return -ENODEV;
memcpy(&sch->schib, &schib, sizeof(schib));
@@ -771,7 +771,7 @@ cio_get_console_sch_no(void)
if (console_irq != -1) {
/* VM provided us with the irq number of the console. */
schid.sch_no = console_irq;
- if (stsch(schid, &console_subchannel.schib) != 0 ||
+ if (stsch_err(schid, &console_subchannel.schib) != 0 ||
(console_subchannel.schib.pmcw.st != SUBCHANNEL_TYPE_IO) ||
!console_subchannel.schib.pmcw.dnv)
return -1;
@@ -863,10 +863,10 @@ __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib)
cc = 0;
for (retry=0;retry<3;retry++) {
schib->pmcw.ena = 0;
- cc = msch(schid, schib);
+ cc = msch_err(schid, schib);
if (cc)
return (cc==3?-ENODEV:-EBUSY);
- if (stsch(schid, schib) || !css_sch_is_valid(schib))
+ if (stsch_err(schid, schib) || !css_sch_is_valid(schib))
return -ENODEV;
if (!schib->pmcw.ena)
return 0;
@@ -913,7 +913,7 @@ static int stsch_reset(struct subchannel_id schid, struct schib *addr)
pgm_check_occured = 0;
s390_base_pgm_handler_fn = cio_reset_pgm_check_handler;
- rc = stsch(schid, addr);
+ rc = stsch_err(schid, addr);
s390_base_pgm_handler_fn = NULL;
/* The program check handler could have changed pgm_check_occured. */
@@ -950,7 +950,7 @@ static int __shutdown_subchannel_easy(struct subchannel_id schid, void *data)
/* No default clear strategy */
break;
}
- stsch(schid, &schib);
+ stsch_err(schid, &schib);
__disable_subchannel_easy(schid, &schib);
}
out:
@@ -1086,7 +1086,7 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
schid = *(struct subchannel_id *)&S390_lowcore.subchannel_id;
if (!schid.one)
return -ENODEV;
- if (stsch(schid, &schib))
+ if (stsch_err(schid, &schib))
return -ENODEV;
if (schib.pmcw.st != SUBCHANNEL_TYPE_IO)
return -ENODEV;
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 2769da5..5116491 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -870,15 +870,10 @@ static int __init css_bus_init(void)
/* Try to enable MSS. */
ret = chsc_enable_facility(CHSC_SDA_OC_MSS);
- switch (ret) {
- case 0: /* Success. */
- max_ssid = __MAX_SSID;
- break;
- case -ENOMEM:
- goto out;
- default:
+ if (ret)
max_ssid = 0;
- }
+ else /* Success. */
+ max_ssid = __MAX_SSID;
ret = slow_subchannel_init();
if (ret)
@@ -1048,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void)
}
subsys_initcall_sync(channel_subsystem_init_sync);
+void channel_subsystem_reinit(void)
+{
+ chsc_enable_facility(CHSC_SDA_OC_MSS);
+}
+
#ifdef CONFIG_PROC_FS
static ssize_t cio_settle_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index c56ab94..c9b8526 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -45,7 +45,7 @@ static void ccw_timeout_log(struct ccw_device *cdev)
sch = to_subchannel(cdev->dev.parent);
private = to_io_private(sch);
orb = &private->orb;
- cc = stsch(sch->schid, &schib);
+ cc = stsch_err(sch->schid, &schib);
printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, "
"device information:\n", get_clock());
--
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