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Commit a2c65850 authored by nagalakshmi.nandigama@lsi.com's avatar nagalakshmi.nandigama@lsi.com Committed by James Bottomley
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[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: default avatarNagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
CC: stable@vger.kernel.org
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 99becf13

drivers/scsi/mpt2sas/mpt2sas_base.c

+1 −1
Original line number Diff line number Diff line
@@ -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()];

}



/**