[GIT PULL] s390 patches for 4.13 merge window #2

From: Martin Schwidefsky
Date: Thu Jul 06 2017 - 02:31:29 EST

Hi Linus,

please pull from the 'for-linus' branch of

git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git for-linus

to receive the following updates:

* The fixup for the blk-mq clash with the scm driver

* An improvement for the driver in regard to raw I/O

* Bug fixes and cleanup

Cornelia Huck (1):
Update my email address

Harald Freudenberger (1):
s390/zcrypt: Fix missing newlines at some debug feature messages.

Jan HÃppner (3):
s390/dasd: Refactor prefix_LRE() and related functions
s390/dasd: Rename dasd_raw_build_cp()
s390/dasd: Make raw I/O usable without prefix support

Jiri Olsa (1):
s390/syscalls: Fix out of bounds arguments access

Michael Holzheu (1):
s390/crash: Remove unused KEXEC_NOTE_BYTES

Sebastian Ott (2):
s390/dasd: remove unneeded code
s390/vfio_ccw: remove unused variable

Stephen Rothwell (1):
s390: fix up for "blk-mq: switch ->queue_rq return value to blk_status_t"

MAINTAINERS | 6 +-
arch/s390/include/asm/kexec.h | 18 ---
arch/s390/include/asm/syscall.h | 6 +
drivers/s390/block/dasd.c | 3 +-
drivers/s390/block/dasd_alias.c | 3 +-
drivers/s390/block/dasd_devmap.c | 2 +-
drivers/s390/block/dasd_eckd.c | 310 ++++++++++++++++-----------------------
drivers/s390/block/dasd_eckd.h | 1 +
drivers/s390/block/scm_blk.c | 10 +-
drivers/s390/cio/vfio_ccw_drv.c | 2 -
drivers/s390/crypto/zcrypt_api.c | 10 +-
include/linux/crash_core.h | 5 +
include/linux/kexec.h | 9 --
13 files changed, 154 insertions(+), 231 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 61d0ac6..1190392 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7324,7 +7324,7 @@ F: arch/powerpc/kvm/

KERNEL VIRTUAL MACHINE for s390 (KVM/s390)
M: Christian Borntraeger <borntraeger@xxxxxxxxxx>
-M: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
+M: Cornelia Huck <cohuck@xxxxxxxxxx>
L: linux-s390@xxxxxxxxxxxxxxx
W: http://www.ibm.com/developerworks/linux/linux390/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git
@@ -11109,7 +11109,7 @@ S: Supported
F: drivers/iommu/s390-iommu.c

S390 VFIO-CCW DRIVER
-M: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
+M: Cornelia Huck <cohuck@xxxxxxxxxx>
M: Dong Jia Shi <bjsdjshi@xxxxxxxxxxxxxxxxxx>
L: linux-s390@xxxxxxxxxxxxxxx
L: kvm@xxxxxxxxxxxxxxx
@@ -13639,7 +13639,7 @@ F: include/uapi/linux/virtio_*.h
F: drivers/crypto/virtio/

VIRTIO DRIVERS FOR S390
-M: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
+M: Cornelia Huck <cohuck@xxxxxxxxxx>
M: Halil Pasic <pasic@xxxxxxxxxxxxxxxxxx>
L: linux-s390@xxxxxxxxxxxxxxx
L: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h
index 2f924bc..dccf24e 100644
--- a/arch/s390/include/asm/kexec.h
+++ b/arch/s390/include/asm/kexec.h
@@ -41,24 +41,6 @@
/* The native architecture */
#define KEXEC_ARCH KEXEC_ARCH_S390

-/*
- * Size for s390x ELF notes per CPU
- *
- * Seven notes plus zero note at the end: prstatus, fpregset, timer,
- * tod_cmp, tod_reg, control regs, and prefix
- */
-#define KEXEC_NOTE_BYTES \
- (ALIGN(sizeof(struct elf_note), 4) * 8 + \
- ALIGN(sizeof("CORE"), 4) * 7 + \
- ALIGN(sizeof(struct elf_prstatus), 4) + \
- ALIGN(sizeof(elf_fpregset_t), 4) + \
- ALIGN(sizeof(u64), 4) + \
- ALIGN(sizeof(u64), 4) + \
- ALIGN(sizeof(u32), 4) + \
- ALIGN(sizeof(u64) * 16, 4) + \
- ALIGN(sizeof(u32), 4) \
- )
-
/* Provide a dummy definition to avoid build failures. */
static inline void crash_setup_regs(struct pt_regs *newregs,
struct pt_regs *oldregs) { }
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 6ba0bf9..6bc941b 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -64,6 +64,12 @@ static inline void syscall_get_arguments(struct task_struct *task,
{
unsigned long mask = -1UL;

+ /*
+ * No arguments for this syscall, there's nothing to do.
+ */
+ if (!n)
+ return;
+
BUG_ON(i + n > 6);
#ifdef CONFIG_COMPAT
if (test_tsk_thread_flag(task, TIF_31BIT))
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 0f1fe4f..670ac0a 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3921,7 +3921,6 @@ EXPORT_SYMBOL(dasd_schedule_requeue);
int dasd_generic_pm_freeze(struct ccw_device *cdev)
{
struct dasd_device *device = dasd_device_from_cdev(cdev);
- int rc;

if (IS_ERR(device))
return PTR_ERR(device);
@@ -3930,7 +3929,7 @@ int dasd_generic_pm_freeze(struct ccw_device *cdev)
set_bit(DASD_FLAG_SUSPENDED, &device->flags);

if (device->discipline->freeze)
- rc = device->discipline->freeze(device);
+ device->discipline->freeze(device);

/* disallow new I/O */
dasd_device_set_stop_bits(device, DASD_STOPPED_PM);
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
index 1e56018..0e0e622 100644
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -754,7 +754,6 @@ static void flush_all_alias_devices_on_lcu(struct alias_lcu *lcu)
struct alias_pav_group *pavgroup;
struct dasd_device *device, *temp;
struct dasd_eckd_private *private;
- int rc;
unsigned long flags;
LIST_HEAD(active);

@@ -785,7 +784,7 @@ static void flush_all_alias_devices_on_lcu(struct alias_lcu *lcu)
device = list_first_entry(&active, struct dasd_device,
alias_list);
spin_unlock_irqrestore(&lcu->lock, flags);
- rc = dasd_flush_device_queue(device);
+ dasd_flush_device_queue(device);
spin_lock_irqsave(&lcu->lock, flags);
/*
* only move device around if it wasn't moved away while we
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index 7c73512..779dce0 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -150,7 +150,7 @@ static int __init dasd_busid(char *str, int *id0, int *id1, int *devno)
/* Old style 0xXXXX or XXXX */
if (!kstrtouint(str, 16, &val)) {
*id0 = *id1 = 0;
- if (val < 0 || val > 0xffff)
+ if (val > 0xffff)
return -EINVAL;
*devno = val;
return 0;
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 122456e..c3e5ad6 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -213,10 +213,8 @@ static void set_ch_t(struct ch_t *geo, __u32 cyl, __u8 head)
geo->head |= head;
}

-static int
-check_XRC (struct ccw1 *de_ccw,
- struct DE_eckd_data *data,
- struct dasd_device *device)
+static int check_XRC(struct ccw1 *ccw, struct DE_eckd_data *data,
+ struct dasd_device *device)
{
struct dasd_eckd_private *private = device->private;
int rc;
@@ -224,7 +222,7 @@ check_XRC (struct ccw1 *de_ccw,
if (!private->rdc_data.facilities.XRC_supported)
return 0;

- /* switch on System Time Stamp - needed for XRC Support */
+ /* switch on System Time Stamp - needed for XRC Support */
data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid' */
data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */

@@ -233,24 +231,30 @@ check_XRC (struct ccw1 *de_ccw,
if (rc == -EOPNOTSUPP || rc == -EACCES)
rc = 0;

- de_ccw->count = sizeof(struct DE_eckd_data);
- de_ccw->flags |= CCW_FLAG_SLI;
+ if (ccw) {
+ ccw->count = sizeof(struct DE_eckd_data);
+ ccw->flags |= CCW_FLAG_SLI;
+ }
+
return rc;
}

static int
define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk,
- unsigned int totrk, int cmd, struct dasd_device *device)
+ unsigned int totrk, int cmd, struct dasd_device *device,
+ int blksize)
{
struct dasd_eckd_private *private = device->private;
- u32 begcyl, endcyl;
u16 heads, beghead, endhead;
+ u32 begcyl, endcyl;
int rc = 0;

- ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT;
- ccw->flags = 0;
- ccw->count = 16;
- ccw->cda = (__u32) __pa(data);
+ if (ccw) {
+ ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT;
+ ccw->flags = 0;
+ ccw->count = 16;
+ ccw->cda = (__u32)__pa(data);
+ }

memset(data, 0, sizeof(struct DE_eckd_data));
switch (cmd) {
@@ -269,18 +273,24 @@ define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk,
data->mask.perm = 0x1;
data->attributes.operation = DASD_BYPASS_CACHE;
break;
+ case DASD_ECKD_CCW_READ_TRACK:
+ case DASD_ECKD_CCW_READ_TRACK_DATA:
+ data->mask.perm = 0x1;
+ data->attributes.operation = private->attrib.operation;
+ data->blk_size = 0;
+ break;
case DASD_ECKD_CCW_WRITE:
case DASD_ECKD_CCW_WRITE_MT:
case DASD_ECKD_CCW_WRITE_KD:
case DASD_ECKD_CCW_WRITE_KD_MT:
data->mask.perm = 0x02;
data->attributes.operation = private->attrib.operation;
- rc = check_XRC (ccw, data, device);
+ rc = check_XRC(ccw, data, device);
break;
case DASD_ECKD_CCW_WRITE_CKD:
case DASD_ECKD_CCW_WRITE_CKD_MT:
data->attributes.operation = DASD_BYPASS_CACHE;
- rc = check_XRC (ccw, data, device);
+ rc = check_XRC(ccw, data, device);
break;
case DASD_ECKD_CCW_ERASE:
case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
@@ -288,7 +298,18 @@ define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk,
data->mask.perm = 0x3;
data->mask.auth = 0x1;
data->attributes.operation = DASD_BYPASS_CACHE;
- rc = check_XRC (ccw, data, device);
+ rc = check_XRC(ccw, data, device);
+ break;
+ case DASD_ECKD_CCW_WRITE_FULL_TRACK:
+ data->mask.perm = 0x03;
+ data->attributes.operation = private->attrib.operation;
+ data->blk_size = 0;
+ break;
+ case DASD_ECKD_CCW_WRITE_TRACK_DATA:
+ data->mask.perm = 0x02;
+ data->attributes.operation = private->attrib.operation;
+ data->blk_size = blksize;
+ rc = check_XRC(ccw, data, device);
break;
default:
dev_err(&device->cdev->dev,
@@ -325,36 +346,26 @@ define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk,
return rc;
}

-static int check_XRC_on_prefix(struct PFX_eckd_data *pfxdata,
- struct dasd_device *device)
-{
- struct dasd_eckd_private *private = device->private;
- int rc;
-
- if (!private->rdc_data.facilities.XRC_supported)
- return 0;
-
- /* switch on System Time Stamp - needed for XRC Support */
- pfxdata->define_extent.ga_extended |= 0x08; /* 'Time Stamp Valid' */
- pfxdata->define_extent.ga_extended |= 0x02; /* 'Extended Parameter' */
- pfxdata->validity.time_stamp = 1; /* 'Time Stamp Valid' */
-
- rc = get_phys_clock(&pfxdata->define_extent.ep_sys_time);
- /* Ignore return code if sync clock is switched off. */
- if (rc == -EOPNOTSUPP || rc == -EACCES)
- rc = 0;
- return rc;
-}

-static void fill_LRE_data(struct LRE_eckd_data *data, unsigned int trk,
- unsigned int rec_on_trk, int count, int cmd,
- struct dasd_device *device, unsigned int reclen,
- unsigned int tlf)
+static void locate_record_ext(struct ccw1 *ccw, struct LRE_eckd_data *data,
+ unsigned int trk, unsigned int rec_on_trk,
+ int count, int cmd, struct dasd_device *device,
+ unsigned int reclen, unsigned int tlf)
{
struct dasd_eckd_private *private = device->private;
int sector;
int dn, d;

+ if (ccw) {
+ ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD_EXT;
+ ccw->flags = 0;
+ if (cmd == DASD_ECKD_CCW_WRITE_FULL_TRACK)
+ ccw->count = 22;
+ else
+ ccw->count = 20;
+ ccw->cda = (__u32)__pa(data);
+ }
+
memset(data, 0, sizeof(*data));
sector = 0;
if (rec_on_trk) {
@@ -481,14 +492,12 @@ static void fill_LRE_data(struct LRE_eckd_data *data, unsigned int trk,
static int prefix_LRE(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata,
unsigned int trk, unsigned int totrk, int cmd,
struct dasd_device *basedev, struct dasd_device *startdev,
- unsigned char format, unsigned int rec_on_trk, int count,
+ unsigned int format, unsigned int rec_on_trk, int count,
unsigned int blksize, unsigned int tlf)
{
struct dasd_eckd_private *basepriv, *startpriv;
- struct DE_eckd_data *dedata;
struct LRE_eckd_data *lredata;
- u32 begcyl, endcyl;
- u16 heads, beghead, endhead;
+ struct DE_eckd_data *dedata;
int rc = 0;

basepriv = basedev->private;
@@ -527,98 +536,19 @@ static int prefix_LRE(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata,
pfxdata->validity.hyper_pav = 1;
}

- /* define extend data (mostly)*/
- switch (cmd) {
- case DASD_ECKD_CCW_READ_HOME_ADDRESS:
- case DASD_ECKD_CCW_READ_RECORD_ZERO:
- case DASD_ECKD_CCW_READ:
- case DASD_ECKD_CCW_READ_MT:
- case DASD_ECKD_CCW_READ_CKD:
- case DASD_ECKD_CCW_READ_CKD_MT:
- case DASD_ECKD_CCW_READ_KD:
- case DASD_ECKD_CCW_READ_KD_MT:
- dedata->mask.perm = 0x1;
- dedata->attributes.operation = basepriv->attrib.operation;
- break;
- case DASD_ECKD_CCW_READ_COUNT:
- dedata->mask.perm = 0x1;
- dedata->attributes.operation = DASD_BYPASS_CACHE;
- break;
- case DASD_ECKD_CCW_READ_TRACK:
- case DASD_ECKD_CCW_READ_TRACK_DATA:
- dedata->mask.perm = 0x1;
- dedata->attributes.operation = basepriv->attrib.operation;
- dedata->blk_size = 0;
- break;
- case DASD_ECKD_CCW_WRITE:
- case DASD_ECKD_CCW_WRITE_MT:
- case DASD_ECKD_CCW_WRITE_KD:
- case DASD_ECKD_CCW_WRITE_KD_MT:
- dedata->mask.perm = 0x02;
- dedata->attributes.operation = basepriv->attrib.operation;
- rc = check_XRC_on_prefix(pfxdata, basedev);
- break;
- case DASD_ECKD_CCW_WRITE_CKD:
- case DASD_ECKD_CCW_WRITE_CKD_MT:
- dedata->attributes.operation = DASD_BYPASS_CACHE;
- rc = check_XRC_on_prefix(pfxdata, basedev);
- break;
- case DASD_ECKD_CCW_ERASE:
- case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
- case DASD_ECKD_CCW_WRITE_RECORD_ZERO:
- dedata->mask.perm = 0x3;
- dedata->mask.auth = 0x1;
- dedata->attributes.operation = DASD_BYPASS_CACHE;
- rc = check_XRC_on_prefix(pfxdata, basedev);
- break;
- case DASD_ECKD_CCW_WRITE_FULL_TRACK:
- dedata->mask.perm = 0x03;
- dedata->attributes.operation = basepriv->attrib.operation;
- dedata->blk_size = 0;
- break;
- case DASD_ECKD_CCW_WRITE_TRACK_DATA:
- dedata->mask.perm = 0x02;
- dedata->attributes.operation = basepriv->attrib.operation;
- dedata->blk_size = blksize;
- rc = check_XRC_on_prefix(pfxdata, basedev);
- break;
- default:
- DBF_DEV_EVENT(DBF_ERR, basedev,
- "PFX LRE unknown opcode 0x%x", cmd);
- BUG();
- return -EINVAL;
- }
-
- dedata->attributes.mode = 0x3; /* ECKD */
-
- if ((basepriv->rdc_data.cu_type == 0x2105 ||
- basepriv->rdc_data.cu_type == 0x2107 ||
- basepriv->rdc_data.cu_type == 0x1750)
- && !(basepriv->uses_cdl && trk < 2))
- dedata->ga_extended |= 0x40; /* Regular Data Format Mode */
-
- heads = basepriv->rdc_data.trk_per_cyl;
- begcyl = trk / heads;
- beghead = trk % heads;
- endcyl = totrk / heads;
- endhead = totrk % heads;
-
- /* check for sequential prestage - enhance cylinder range */
- if (dedata->attributes.operation == DASD_SEQ_PRESTAGE ||
- dedata->attributes.operation == DASD_SEQ_ACCESS) {
-
- if (endcyl + basepriv->attrib.nr_cyl < basepriv->real_cyl)
- endcyl += basepriv->attrib.nr_cyl;
- else
- endcyl = (basepriv->real_cyl - 1);
- }
+ rc = define_extent(NULL, dedata, trk, totrk, cmd, basedev, blksize);

- set_ch_t(&dedata->beg_ext, begcyl, beghead);
- set_ch_t(&dedata->end_ext, endcyl, endhead);
+ /*
+ * For some commands the System Time Stamp is set in the define extent
+ * data when XRC is supported. The validity of the time stamp must be
+ * reflected in the prefix data as well.
+ */
+ if (dedata->ga_extended & 0x08 && dedata->ga_extended & 0x02)
+ pfxdata->validity.time_stamp = 1; /* 'Time Stamp Valid' */

if (format == 1) {
- fill_LRE_data(lredata, trk, rec_on_trk, count, cmd,
- basedev, blksize, tlf);
+ locate_record_ext(NULL, lredata, trk, rec_on_trk, count, cmd,
+ basedev, blksize, tlf);
}

return rc;
@@ -1887,7 +1817,7 @@ dasd_eckd_analysis_ccw(struct dasd_device *device)
ccw = cqr->cpaddr;
/* Define extent for the first 3 tracks. */
define_extent(ccw++, cqr->data, 0, 2,
- DASD_ECKD_CCW_READ_COUNT, device);
+ DASD_ECKD_CCW_READ_COUNT, device, 0);
LO_data = cqr->data + sizeof(struct DE_eckd_data);
/* Locate record for the first 4 records on track 0. */
ccw[-1].flags |= CCW_FLAG_CC;
@@ -2266,7 +2196,7 @@ dasd_eckd_build_check(struct dasd_device *base, struct format_data_t *fdata,
count, 0, 0);
} else {
define_extent(ccw++, data, fdata->start_unit, fdata->stop_unit,
- DASD_ECKD_CCW_READ_COUNT, startdev);
+ DASD_ECKD_CCW_READ_COUNT, startdev, 0);

data += sizeof(struct DE_eckd_data);
ccw[-1].flags |= CCW_FLAG_CC;
@@ -2420,7 +2350,7 @@ dasd_eckd_build_format(struct dasd_device *base,
} else {
define_extent(ccw++, (struct DE_eckd_data *) data,
fdata->start_unit, fdata->stop_unit,
- DASD_ECKD_CCW_WRITE_CKD, startdev);
+ DASD_ECKD_CCW_WRITE_CKD, startdev, 0);
/* grant subsystem permission to format R0 */
if (r0_perm)
((struct DE_eckd_data *) data)
@@ -2444,7 +2374,7 @@ dasd_eckd_build_format(struct dasd_device *base,
} else {
define_extent(ccw++, (struct DE_eckd_data *) data,
fdata->start_unit, fdata->stop_unit,
- DASD_ECKD_CCW_WRITE_RECORD_ZERO, startdev);
+ DASD_ECKD_CCW_WRITE_RECORD_ZERO, startdev, 0);
data += sizeof(struct DE_eckd_data);
}
ccw[-1].flags |= CCW_FLAG_CC;
@@ -2463,7 +2393,7 @@ dasd_eckd_build_format(struct dasd_device *base,
} else {
define_extent(ccw++, (struct DE_eckd_data *) data,
fdata->start_unit, fdata->stop_unit,
- DASD_ECKD_CCW_WRITE_CKD, startdev);
+ DASD_ECKD_CCW_WRITE_CKD, startdev, 0);
data += sizeof(struct DE_eckd_data);
}
ccw[-1].flags |= CCW_FLAG_CC;
@@ -3187,7 +3117,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
sizeof(struct PFX_eckd_data));
} else {
if (define_extent(ccw++, cqr->data, first_trk,
- last_trk, cmd, basedev) == -EAGAIN) {
+ last_trk, cmd, basedev, 0) == -EAGAIN) {
/* Clock not in sync and XRC is enabled.
* Try again later.
*/
@@ -3509,12 +3439,19 @@ static int prepare_itcw(struct itcw *itcw,
dedata->mask.perm = 0x02;
dedata->attributes.operation = basepriv->attrib.operation;
dedata->blk_size = blksize;
- rc = check_XRC_on_prefix(&pfxdata, basedev);
+ rc = check_XRC(NULL, dedata, basedev);
dedata->ga_extended |= 0x42;
lredata->operation.orientation = 0x0;
lredata->operation.operation = 0x3F;
lredata->extended_operation = 0x23;
lredata->auxiliary.check_bytes = 0x2;
+ /*
+ * If XRC is supported the System Time Stamp is set. The
+ * validity of the time stamp must be reflected in the prefix
+ * data as well.
+ */
+ if (dedata->ga_extended & 0x08 && dedata->ga_extended & 0x02)
+ pfxdata.validity.time_stamp = 1; /* 'Time Stamp Valid' */
pfx_cmd = DASD_ECKD_CCW_PFX;
break;
case DASD_ECKD_CCW_READ_COUNT_MT:
@@ -3842,25 +3779,28 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
return cqr;
}

-static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
- struct dasd_block *block,
- struct request *req)
+static struct dasd_ccw_req *dasd_eckd_build_cp_raw(struct dasd_device *startdev,
+ struct dasd_block *block,
+ struct request *req)
{
- unsigned long *idaws;
+ sector_t start_padding_sectors, end_sector_offset, end_padding_sectors;
+ unsigned int seg_len, len_to_track_end;
+ unsigned int cidaw, cplength, datasize;
+ sector_t first_trk, last_trk, sectors;
+ struct dasd_eckd_private *base_priv;
struct dasd_device *basedev;
- struct dasd_ccw_req *cqr;
- struct ccw1 *ccw;
struct req_iterator iter;
+ struct dasd_ccw_req *cqr;
+ unsigned int first_offs;
+ unsigned int trkcount;
+ unsigned long *idaws;
+ unsigned int size;
+ unsigned char cmd;
struct bio_vec bv;
+ struct ccw1 *ccw;
+ int use_prefix;
+ void *data;
char *dst;
- unsigned char cmd;
- unsigned int trkcount;
- unsigned int seg_len, len_to_track_end;
- unsigned int first_offs;
- unsigned int cidaw, cplength, datasize;
- sector_t first_trk, last_trk, sectors;
- sector_t start_padding_sectors, end_sector_offset, end_padding_sectors;
- unsigned int pfx_datasize;

/*
* raw track access needs to be mutiple of 64k and on 64k boundary
@@ -3878,8 +3818,7 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
DBF_DEV_EVENT(DBF_ERR, basedev,
"raw write not track aligned (%lu,%lu) req %p",
start_padding_sectors, end_padding_sectors, req);
- cqr = ERR_PTR(-EINVAL);
- goto out;
+ return ERR_PTR(-EINVAL);
}

first_trk = blk_rq_pos(req) / DASD_RAW_SECTORS_PER_TRACK;
@@ -3892,10 +3831,8 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
cmd = DASD_ECKD_CCW_READ_TRACK;
else if (rq_data_dir(req) == WRITE)
cmd = DASD_ECKD_CCW_WRITE_FULL_TRACK;
- else {
- cqr = ERR_PTR(-EINVAL);
- goto out;
- }
+ else
+ return ERR_PTR(-EINVAL);

/*
* Raw track based I/O needs IDAWs for each page,
@@ -3903,38 +3840,46 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
*/
cidaw = trkcount * DASD_RAW_BLOCK_PER_TRACK;

- /* 1x prefix + one read/write ccw per track */
- cplength = 1 + trkcount;
-
/*
- * struct PFX_eckd_data has up to 2 byte as extended parameter
- * this is needed for write full track and has to be mentioned
- * separately
- * add 8 instead of 2 to keep 8 byte boundary
+ * struct PFX_eckd_data and struct LRE_eckd_data can have up to 2 bytes
+ * of extended parameter. This is needed for write full track.
*/
- pfx_datasize = sizeof(struct PFX_eckd_data) + 8;
+ base_priv = basedev->private;
+ use_prefix = base_priv->features.feature[8] & 0x01;
+ if (use_prefix) {
+ cplength = 1 + trkcount;
+ size = sizeof(struct PFX_eckd_data) + 2;
+ } else {
+ cplength = 2 + trkcount;
+ size = sizeof(struct DE_eckd_data) +
+ sizeof(struct LRE_eckd_data) + 2;
+ }
+ size = ALIGN(size, 8);

- datasize = pfx_datasize + cidaw * sizeof(unsigned long long);
+ datasize = size + cidaw * sizeof(unsigned long long);

/* Allocate the ccw request. */
cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, cplength,
datasize, startdev);
if (IS_ERR(cqr))
- goto out;
+ return cqr;
+
ccw = cqr->cpaddr;
+ data = cqr->data;

- if (prefix_LRE(ccw++, cqr->data, first_trk, last_trk, cmd,
- basedev, startdev, 1 /* format */, first_offs + 1,
- trkcount, 0, 0) == -EAGAIN) {
- /* Clock not in sync and XRC is enabled.
- * Try again later.
- */
- dasd_sfree_request(cqr, startdev);
- cqr = ERR_PTR(-EAGAIN);
- goto out;
+ if (use_prefix) {
+ prefix_LRE(ccw++, data, first_trk, last_trk, cmd, basedev,
+ startdev, 1, first_offs + 1, trkcount, 0, 0);
+ } else {
+ define_extent(ccw++, data, first_trk, last_trk, cmd, basedev, 0);
+ ccw[-1].flags |= CCW_FLAG_CC;
+
+ data += sizeof(struct DE_eckd_data);
+ locate_record_ext(ccw++, data, first_trk, first_offs + 1,
+ trkcount, cmd, basedev, 0, 0);
}

- idaws = (unsigned long *)(cqr->data + pfx_datasize);
+ idaws = (unsigned long *)(cqr->data + size);
len_to_track_end = 0;
if (start_padding_sectors) {
ccw[-1].flags |= CCW_FLAG_CC;
@@ -3984,9 +3929,6 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;

- if (IS_ERR(cqr) && PTR_ERR(cqr) != -EAGAIN)
- cqr = NULL;
-out:
return cqr;
}

@@ -4096,7 +4038,7 @@ static struct dasd_ccw_req *dasd_eckd_build_alias_cp(struct dasd_device *base,
spin_lock_irqsave(get_ccwdev_lock(startdev->cdev), flags);
private->count++;
if ((base->features & DASD_FEATURE_USERAW))
- cqr = dasd_raw_build_cp(startdev, block, req);
+ cqr = dasd_eckd_build_cp_raw(startdev, block, req);
else
cqr = dasd_eckd_build_cp(startdev, block, req);
if (IS_ERR(cqr))
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index e2a710c..fb1f537d 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -29,6 +29,7 @@
#define DASD_ECKD_CCW_SNID 0x34
#define DASD_ECKD_CCW_RSSD 0x3e
#define DASD_ECKD_CCW_LOCATE_RECORD 0x47
+#define DASD_ECKD_CCW_LOCATE_RECORD_EXT 0x4b
#define DASD_ECKD_CCW_SNSS 0x54
#define DASD_ECKD_CCW_DEFINE_EXTENT 0x63
#define DASD_ECKD_CCW_WRITE_MT 0x85
diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c
index 42018a2..0071feb 100644
--- a/drivers/s390/block/scm_blk.c
+++ b/drivers/s390/block/scm_blk.c
@@ -278,7 +278,7 @@ struct scm_queue {
spinlock_t lock;
};

-static int scm_blk_request(struct blk_mq_hw_ctx *hctx,
+static blk_status_t scm_blk_request(struct blk_mq_hw_ctx *hctx,
const struct blk_mq_queue_data *qd)
{
struct scm_device *scmdev = hctx->queue->queuedata;
@@ -290,7 +290,7 @@ static int scm_blk_request(struct blk_mq_hw_ctx *hctx,
spin_lock(&sq->lock);
if (!scm_permit_request(bdev, req)) {
spin_unlock(&sq->lock);
- return BLK_MQ_RQ_QUEUE_BUSY;
+ return BLK_STS_RESOURCE;
}

scmrq = sq->scmrq;
@@ -299,7 +299,7 @@ static int scm_blk_request(struct blk_mq_hw_ctx *hctx,
if (!scmrq) {
SCM_LOG(5, "no request");
spin_unlock(&sq->lock);
- return BLK_MQ_RQ_QUEUE_BUSY;
+ return BLK_STS_RESOURCE;
}
scm_request_init(bdev, scmrq);
sq->scmrq = scmrq;
@@ -315,7 +315,7 @@ static int scm_blk_request(struct blk_mq_hw_ctx *hctx,

sq->scmrq = NULL;
spin_unlock(&sq->lock);
- return BLK_MQ_RQ_QUEUE_BUSY;
+ return BLK_STS_RESOURCE;
}
blk_mq_start_request(req);

@@ -324,7 +324,7 @@ static int scm_blk_request(struct blk_mq_hw_ctx *hctx,
sq->scmrq = NULL;
}
spin_unlock(&sq->lock);
- return BLK_MQ_RQ_QUEUE_OK;
+ return BLK_STS_OK;
}

static int scm_blk_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index a25367e..82f05c4 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -69,12 +69,10 @@ int vfio_ccw_sch_quiesce(struct subchannel *sch)
static void vfio_ccw_sch_io_todo(struct work_struct *work)
{
struct vfio_ccw_private *private;
- struct subchannel *sch;
struct irb *irb;

private = container_of(work, struct vfio_ccw_private, io_work);
irb = &private->irb;
- sch = private->sch;

if (scsw_is_solicited(&irb->scsw)) {
cp_update_scsw(&private->cp, &irb->scsw);
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index b1c27e2..b5f4006 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -94,7 +94,7 @@ static inline int zcrypt_process_rescan(void)
atomic_set(&zcrypt_rescan_req, 0);
atomic_inc(&zcrypt_rescan_count);
ap_bus_force_rescan();
- ZCRYPT_DBF(DBF_INFO, "rescan count=%07d",
+ ZCRYPT_DBF(DBF_INFO, "rescan count=%07d\n",
atomic_inc_return(&zcrypt_rescan_count));
return 1;
}
@@ -822,7 +822,7 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
rc = zcrypt_rsa_modexpo(&mex);
} while (rc == -EAGAIN);
if (rc) {
- ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSAMODEXPO rc=%d", rc);
+ ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSAMODEXPO rc=%d\n", rc);
return rc;
}
return put_user(mex.outputdatalength, &umex->outputdatalength);
@@ -841,7 +841,7 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
rc = zcrypt_rsa_crt(&crt);
} while (rc == -EAGAIN);
if (rc) {
- ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSACRT rc=%d", rc);
+ ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSACRT rc=%d\n", rc);
return rc;
}
return put_user(crt.outputdatalength, &ucrt->outputdatalength);
@@ -860,7 +860,7 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
rc = zcrypt_send_cprb(&xcRB);
} while (rc == -EAGAIN);
if (rc)
- ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDCPRB rc=%d", rc);
+ ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDCPRB rc=%d\n", rc);
if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB)))
return -EFAULT;
return rc;
@@ -879,7 +879,7 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
rc = zcrypt_send_ep11_cprb(&xcrb);
} while (rc == -EAGAIN);
if (rc)
- ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDEP11CPRB rc=%d", rc);
+ ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDEP11CPRB rc=%d\n", rc);
if (copy_to_user(uxcrb, &xcrb, sizeof(xcrb)))
return -EFAULT;
return rc;
diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h
index 541a197..4090a42 100644
--- a/include/linux/crash_core.h
+++ b/include/linux/crash_core.h
@@ -10,6 +10,11 @@
#define CRASH_CORE_NOTE_NAME_BYTES ALIGN(sizeof(CRASH_CORE_NOTE_NAME), 4)
#define CRASH_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4)

+/*
+ * The per-cpu notes area is a list of notes terminated by a "NULL"
+ * note header. For kdump, the code in vmcore.c runs in the context
+ * of the second kernel to combine them into one note.
+ */
#define CRASH_CORE_NOTE_BYTES ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \
CRASH_CORE_NOTE_NAME_BYTES + \
CRASH_CORE_NOTE_DESC_BYTES)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index c9481eb..6588841 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -63,15 +63,6 @@
#define KEXEC_CORE_NOTE_NAME CRASH_CORE_NOTE_NAME

/*
- * The per-cpu notes area is a list of notes terminated by a "NULL"
- * note header. For kdump, the code in vmcore.c runs in the context
- * of the second kernel to combine them into one note.
- */
-#ifndef KEXEC_NOTE_BYTES
-#define KEXEC_NOTE_BYTES CRASH_CORE_NOTE_BYTES
-#endif
-
-/*
* This structure is used to hold the arguments that are used when loading
* kernel binaries.
*/