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authorRichard Fitzgerald <rf@opensource.cirrus.com>2024-08-26 10:49:40 +0100
committerTakashi Iwai <tiwai@suse.de>2024-08-26 12:03:57 +0200
commit28b329f431cef840fddd9a9b493bc3eff1aa06c0 (patch)
tree345482ffdc6f76579e86ff4681a6a523da239e45 /block/genhd.c
parent2dc43c5e212036458ed7c5586fb82ee183fee504 (diff)
ALSA: hda: hda_component: Fix mutex crash if nothing ever binds
Move the initialization of parent->mutex into hda_component_manager_init() so that it is always valid. In hda_component_manager_bind() do not clear the parent information. Only zero-fill the per-component data ready for it to be filled in by the components as they bind. Previously parent->mutex was being initialized only in hda_component_manager_bind(). This meant that it was only initialized if all components appeared and there was a bind callback. If there wasn't a bind the mutex object was not valid when the Realtek driver called any of the other functions. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Fixes: 047b9cbbaa8e ("ALSA: hda: hda_component: Protect shared data with a mutex") Link: https://patch.msgid.link/20240826094940.45563-1-rf@opensource.cirrus.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'block/genhd.c')
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