From: Alex Shi <alex.shi@intel.com>
To: JBottomley@parallels.com, Nagalakshmi.Nandigama@lsi.com
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
alex.shi@intel.com
Subject: [PATCH] scsi/mpt2sas: remove unnecesscary preempt requirement for MSIX
Date: Sat, 28 Apr 2012 14:27:33 +0800 [thread overview]
Message-ID: <1335594453-30679-1-git-send-email-alex.shi@intel.com> (raw)
smp_processor_id() need used in preempt safe ENV. Otherwise, the
cpu may be preempted and run on other cpus. But here, we don't care much
the specific CPU which handler the MSI, so just replace it by
raw_smp_processor_id() to avoid preempt debug warning.
Signed-off-by: Alex Shi <alex.shi@intel.com>
---
drivers/scsi/mpt2sas/mpt2sas_base.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 8a59a77..3f518ba 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1785,7 +1785,7 @@ 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()];
}
/**
--
1.7.5.4
next reply other threads:[~2012-04-28 6:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-28 6:27 Alex Shi [this message]
2012-04-30 5:29 ` Nandigama, Nagalakshmi
2012-05-01 3:36 ` Alex Shi
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