[GIT PULL] s390 patches for 4.6-rc5

Martin Schwidefsky
2016-04-18T07:48:15Z

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:

A couple of bug fixes.

Gerald Schaefer (1):
s390/dcssblk: fix possible deadlock in remove vs. per-device attributes

Heiko Carstens (2):
s390/spinlock: avoid yield to non existent cpu
s390: add CPU_BIG_ENDIAN config option

Sebastian Ott (2):
s390/scm_blk: fix deadlock for requests != REQ_TYPE_FS
s390/pci: add extra padding to function measurement block

Sudip Mukherjee (1):
s390/seccomp: include generic seccomp header file

arch/s390/Kconfig | 3 +++
arch/s390/include/asm/pci.h | 3 ++-
arch/s390/include/asm/seccomp.h | 2 ++
arch/s390/lib/spinlock.c | 1 +
drivers/s390/block/dcssblk.c | 5 +++--
drivers/s390/block/scm_blk.c | 2 +-
6 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index aad23e3..bf24ab1 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -4,6 +4,9 @@ config MMU
config ZONE_DMA
def_bool y

+config CPU_BIG_ENDIAN
+ def_bool y
+
config LOCKDEP_SUPPORT
def_bool y

diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index b6bfa16..535a46d 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -44,7 +44,8 @@ struct zpci_fmb {
u64 rpcit_ops;
u64 dma_rbytes;
u64 dma_wbytes;
-} __packed __aligned(64);
+ u64 pad[2];
+} __packed __aligned(128);

enum zpci_state {
ZPCI_FN_STATE_RESERVED,
diff --git a/arch/s390/include/asm/seccomp.h b/arch/s390/include/asm/seccomp.h
index 781a9cf..e10f833 100644
--- a/arch/s390/include/asm/seccomp.h
+++ b/arch/s390/include/asm/seccomp.h
@@ -13,4 +13,6 @@
#define __NR_seccomp_exit_32 __NR_exit
#define __NR_seccomp_sigreturn_32 __NR_sigreturn

+#include <asm-generic/seccomp.h>
+
#endif /* _ASM_S390_SECCOMP_H */
diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index d4549c9..e5f50a7 100644
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -105,6 +105,7 @@ void arch_spin_lock_wait_flags(arch_spinlock_t *lp, unsigned long flags)
if (_raw_compare_and_swap(&lp->lock, 0, cpu))
return;
local_irq_restore(flags);
+ continue;
}
/* Check if the lock owner is running. */
if (first_diag && cpu_is_preempted(~owner)) {
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 1bce9cf..b839086 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -756,15 +756,16 @@ dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const ch
blk_cleanup_queue(dev_info->dcssblk_queue);
dev_info->gd->queue = NULL;
put_disk(dev_info->gd);
- device_unregister(&dev_info->dev);

/* unload all related segments */
list_for_each_entry(entry, &dev_info->seg_list, lh)
segment_unload(entry->segment_name);

- put_device(&dev_info->dev);
up_write(&dcssblk_devices_sem);

+ device_unregister(&dev_info->dev);
+ put_device(&dev_info->dev);
+
rc = count;
out_buf:
kfree(local_buf);
diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c
index 75d9896..e6f54d3 100644
--- a/drivers/s390/block/scm_blk.c
+++ b/drivers/s390/block/scm_blk.c
@@ -303,7 +303,7 @@ static void scm_blk_request(struct request_queue *rq)
if (req->cmd_type != REQ_TYPE_FS) {
blk_start_request(req);
blk_dump_rq_flags(req, KMSG_COMPONENT " bad request");
- blk_end_request_all(req, -EIO);
+ __blk_end_request_all(req, -EIO);
continue;
}