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| author |   Takashi Iwai <tiwai@suse.de> | 2015-01-13 10:53:20 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-01-28 22:29:20 +0100 |
| commit | 4161b4505f1690358ac0a9ee59845a7887336b21 (patch) | |
| tree | 627a37684dae207307c59322d7673371d7f346a0 /include/sound/ak4114.h | |
| parent | ALSA: seq-dummy: remove deadlock-causing events on close (diff) | |
| download | linux-dev-4161b4505f1690358ac0a9ee59845a7887336b21.tar.xz linux-dev-4161b4505f1690358ac0a9ee59845a7887336b21.zip | |
ALSA: ak411x: Fix stall in work callback
When ak4114 work calls its callback and the callback invokes
ak4114_reinit(), it stalls due to flush_delayed_work(). For avoiding
this, control the reentrance by introducing a refcount. Also
flush_delayed_work() is replaced with cancel_delayed_work_sync().
The exactly same bug is present in ak4113.c and fixed as well.
Reported-by: Pavel Hofman <pavel.hofman@ivitera.com>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Tested-by: Pavel Hofman <pavel.hofman@ivitera.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/ak4114.h')
| -rw-r--r-- | include/sound/ak4114.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sound/ak4114.h b/include/sound/ak4114.h index 52f02a60dba7..069299a88915 100644 --- a/include/sound/ak4114.h +++ b/include/sound/ak4114.h @@ -168,7 +168,7 @@ struct ak4114 { ak4114_write_t * write; ak4114_read_t * read; void * private_data; - unsigned int init: 1; + atomic_t wq_processing; spinlock_t lock; unsigned char regmap[6]; unsigned char txcsb[5]; |