From: nagalakshmi.nandigama@lsi.com Date: Tue, 17 Apr 2012 05:55:04 +0000 (+0530) Subject: [SCSI] mpt2sas: Fix unsafe using smp_processor_id() in preemptible X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a2c658505bf5c75516ee0a79287223e86a2474af;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git [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 CC: stable@vger.kernel.org Signed-off-by: James Bottomley --- 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()]; } /**