From: Aaron Lu <aaron.lu@intel.com>
Date: Mon, 3 Dec 2012 03:35:02 +0000 (+0800)
Subject: libata: set dma_mode to 0xff in reset
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~5^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5416912af75de9cba5d1c75b99a7888b0bbbd2fb;p=pandora-kernel.git

libata: set dma_mode to 0xff in reset

ata_device->dma_mode's initial value is zero, which is not a valid dma
mode, but ata_dma_enabled will return true for this value. This patch
sets dma_mode to 0xff in reset function, so that ata_dma_enabled will
not return true for this case, or it will cause problem for pata_acpi.

The corrsponding bugzilla page is at:
https://bugzilla.kernel.org/show_bug.cgi?id=49151

Reported-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Szymon Janc <szymon@janc.net.pl>
Tested-by: Dutra Julio <dutra.julio@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

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