From: Albert Lee <albertcc@tw.ibm.com>
Date: Sat, 25 Mar 2006 10:11:12 +0000 (+0800)
Subject: [PATCH] libata-dev: fix the device err check sequence (respin)
X-Git-Tag: v2.6.18-rc1~1079^2~98^2~13^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71601958f73b952281f2b02e16d1f11c99ee0a8b;p=pandora-kernel.git

[PATCH] libata-dev: fix the device err check sequence (respin)

Current irq-pio checks ERR bit and stops on ERR before it does anything else.
This behavior doesn't look right.
The DRQ bit should take higher precedence than the ERR bit.

Changes:
- Let the HSM do the data transfer whenever the
  device asks for DRQ bit, even if the ERR bit is set.
- For DRQ=1 ERR=1, don't trust the data

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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