From 2c17d2da8c9ef2c5be5077d3995041791e38094d Mon Sep 17 00:00:00 2001
From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
Date: Tue, 1 May 2012 11:42:30 -0500
Subject: [PATCH] [SCSI] hpsa: do not read from controller unnecessarily in
 completion code

MSI/MSI-X interrupts can't race the DMA completion they are communicating
so no need to read from controller to flush the DMA to the host if
MSI or MSI-X interrupts are being used.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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