From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Sun, 4 Feb 2007 19:54:57 +0000 (+0100)
Subject: ieee1394: sbp2: optimize DMA direction of s/g tables
X-Git-Tag: v2.6.22-rc1~1105^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2446a79f4f0a5e88e5d8316dac407d66ac10f70d;p=pandora-kernel.git

ieee1394: sbp2: optimize DMA direction of s/g tables

Unlike the name suggests, "cmd->scatter_gather_element" holds only the
s/g table, not the actual s/g elements.  Since the table is only read
but never written by the device, DMA_BIDIRECTIONAL can be replaced by
DMA_TO_DEVICE which may be cheaper on some architectures.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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