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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 <[email protected]> Acked-by: Jaroslav Kysela <[email protected]> Tested-by: Pavel Hofman <[email protected]> Cc: <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
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