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(parent: 07e38d9) | patch
megaraid_sas : Use writeq for 64bit pci write to avoid spinlock overhead
authorSumit.Saxena@avagotech.com <Sumit.Saxena@avagotech.com>
Fri, 12 Sep 2014 13:27:18 +0000 (18:57 +0530)
committerChristoph Hellwig <hch@lst.de>
Tue, 16 Sep 2014 16:14:22 +0000 (09:14 -0700)
commit0756040952582c4e7c2f23ff2af882c0f0c7a516
tree5323de07a6b316457de0c6c453b8921eae229715tree | snapshot
parent07e38d94ef3646ccee4f222ae1f3033bb37f7fa0commit | diff
megaraid_sas : Use writeq for 64bit pci write to avoid spinlock overhead

Resending the patch. Addressed the review comments from Tomas Henzl.
Reduce the assingment for u64 req_data variable.

Use writeq() for 64bit PCI write instead of writel() to avoid additional lock overhead.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
drivers/scsi/megaraid/megaraid_sas_fusion.c diff | blob | history
Domain: System / Kernel;