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authornagalakshmi.nandigama@lsi.com <nagalakshmi.nandigama@lsi.com>2012-04-17 07:55:04 +0200
committerJames Bottomley <JBottomley@Parallels.com>2012-06-06 05:38:56 +0200
commita2c658505bf5c75516ee0a79287223e86a2474af (patch)
tree9fe23d2db75e2a24cae14ad8c6985f6d0b5e8be4 /drivers
parentPull 'for-linus' branches of git://git.kernel.org/pub/scm/linux/kernel/git/vi... (diff)
downloadlinux-a2c658505bf5c75516ee0a79287223e86a2474af.tar.xz
linux-a2c658505bf5c75516ee0a79287223e86a2474af.zip
[SCSI] mpt2sas: Fix unsafe using smp_processor_id() in preemptible
When CONFIG_DEBUG_PREEMPT is enabled, bug is observed in the smp_processor_id(). This is because smp_processor_id() is not called in preempt safe condition. To fix this issue, use raw_smp_processor_id instead of smp_processor_id. Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com> CC: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_base.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 6102ef2cb2d8..9d46fcbe7755 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1792,7 +1792,7 @@ static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
static inline u8
_base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
{
- return ioc->cpu_msix_table[smp_processor_id()];
+ return ioc->cpu_msix_table[raw_smp_processor_id()];
}
/**