From: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Date: Mon, 17 Dec 2007 16:30:06 +0000 (+0100)
Subject: [ALSA] at73c213: replace spinlock in mixer functions with a mutex
X-Git-Tag: v2.6.25-rc1~1127^2~179
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f488d9fcc84692ca0060b4e16c1c61a8d514cea8;p=pandora-kernel.git

[ALSA] at73c213: replace spinlock in mixer functions with a mutex

This patch fixes the locking bug in the at73c213 SPI sound driver. This bug was
triggered because spinlocks were wrapped around the spi_sync call which might
sleep. The fix was to add a mutex to the sound driver and replace the spinlocks
in the mixer functions with mutex lock/unlock.
Tested on STK1000/STK1002.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

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