From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Wed, 11 Feb 2009 21:08:41 +0000 (-0800)
Subject: [libata] pata_amd: program FIFO
X-Git-Tag: v2.6.29-rc7~53^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c48052cc36e02fff6a9bb3cf83c4206b9127611f;p=pandora-kernel.git

[libata] pata_amd: program FIFO

With 32bit PIO we can use the posted write buffers, but only for 32bit I/O
cycles.  This means we must disable the FIFO for ATAPI where a final 16bit
cycle may occur.

Rework the FIFO logic so that we disable the FIFO then selectively
re-enable it when we set the timings on AMD devices.  Also fix a case
where we scribbled on PCI config 0x41 of Nvidia chips when we shouldn't.

Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

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