tree 701cfaeb3f883a6cc7cfc65356c03d7221e55237
parent ac3e37412c195f1b48fe06327eb4ad0c072a1222
author Hans-Christian Egtvedt <hcegtvedt@atmel.com> 1197909006 +0100
committer Jaroslav Kysela <perex@perex.cz> 1201796979 +0100

[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>