From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Date: Tue, 31 Mar 2009 18:15:27 +0000 (+0200)
Subject: ide-iops: only clear DMA words on setting DMA mode
X-Git-Tag: v2.6.30-rc1~418^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c4199930b119eb9c1ffb102ed57eaac4d4424d08;p=pandora-kernel.git

ide-iops: only clear DMA words on setting DMA mode

The bytes indicating current DMA mode in the identify data words 62, 63, and 88
should only change on setting a DMA mode, so stop clearing them  on setting PIO
mode in ide_config_drive_speed().  While at it, correct SW/MW DMA mode masks...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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