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authorTakashi Iwai <tiwai@suse.de>2018-01-08 14:03:53 +0100
committerTakashi Iwai <tiwai@suse.de>2018-01-08 16:40:26 +0100
commit900498a34a3ac9c611e9b425094c8106bdd7dc1c (patch)
tree844ccba051c0491b8e7d74879e6a8d20f11c6e53 /sound/drivers
parent29159a4ed7044c52e3e2cf1a9fb55cec4745c60b (diff)
downloadlinux-900498a34a3ac9c611e9b425094c8106bdd7dc1c.tar.bz2
ALSA: pcm: Allow aborting mutex lock at OSS read/write loops
PCM OSS read/write loops keep taking the mutex lock for the whole read/write, and this might take very long when the exceptionally high amount of data is given. Also, since it invokes with mutex_lock(), the concurrent read/write becomes unbreakable. This patch tries to address these issues by replacing mutex_lock() with mutex_lock_interruptible(), and also splits / re-takes the lock at each read/write period chunk, so that it can switch the context more finely if requested. Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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