linux

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Pierre-Louis Bossart ac3467ad7f ALSA: hda: ext: fix locking in stream_release

The snd_hdac_ext_stream_release() routine uses the bus reg_lock, but
releases it before calling snd_hdac_stream_release() where the bus
reg_lock is taken again.

This creates a timing window where the link stream release could test
an invalid 'opened' boolean status and fail to recouple the host and
link parts.

Fix by exposing a locked version of snd_hdac_stream_release() and use
it without releasing the spinlock.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20220919121041.43463-8-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2022-09-20 08:08:14 +02:00

ext

ALSA: hda: ext: fix locking in stream_release

2022-09-20 08:08:14 +02:00

array.c

treewide: Add SPDX license identifier for missed files

2019-05-21 10:50:45 +02:00

hda_bus_type.c

treewide: Add SPDX license identifier for more missed files

2019-05-21 10:50:45 +02:00

hdac_bus.c

ALSA: hda: Skip event processing for unregistered codecs