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

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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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Hans-Christian Egtvedt 2007-12-17 17:30:06 +01:00 • committed by Jaroslav Kysela

parent ac3e37412c

commit f488d9fcc8

1 changed files with 19 additions and 15 deletions

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sound/spi/at73c213.c

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