tree 5323de07a6b316457de0c6c453b8921eae229715
parent 07e38d94ef3646ccee4f222ae1f3033bb37f7fa0
author Sumit.Saxena@avagotech.com <Sumit.Saxena@avagotech.com> 1410528438 +0530
committer Christoph Hellwig <hch@lst.de> 1410884062 -0700

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>