From: David S. Miller <davem@sunset.davemloft.net>
Date: Sat, 14 Apr 2007 17:29:10 +0000 (-0700)
Subject: [SCSI] QLOGICPTI: Do not unmap DMA unless we actually mapped something.
X-Git-Tag: v2.6.21-rc7~7^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d3ee2cb0ab59f78fdc801ede7db15ef47387bd0;p=pandora-kernel.git

[SCSI] QLOGICPTI: Do not unmap DMA unless we actually mapped something.

We only map DMA when cmd->request_bufflen is non-zero for non-sg
buffers, we thus should make the same check when unmapping.

Based upon a report from Pasi Pirhonen.

Signed-off-by: David S. Miller <davem@davemloft.net>
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