From ca460f86521ed515d17dd1314f7b95183866f681 Mon Sep 17 00:00:00 2001
From: David Henningsson <david.henningsson@canonical.com>
Date: Fri, 28 Feb 2014 07:56:58 +0100
Subject: [PATCH] ALSA: hda - Fix CORB reset to follow specification

According to the HDA spec, we must write 1 to bit 15 on a CORBRP
reset, read back 1, then write 0, then read back 0. This must be
done while the DMA is not running.

We accidentaly ended up writing back the 0 by using a writel
instead of a writew to CORBWP.

This caused occasional controller failure on Bay Trail hardware.

[replaced error messages with dev_err() by tiwai]

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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