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ASoC: topology: Add missing rwsem around snd_ctl_remove() calls

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[ Upstream commit 7e567b5ae06315ef2d70666b149962e2bb4b97af ]

snd_ctl_remove() has to be called with card->controls_rwsem held (when
called after the card instantiation).  This patch add the missing
rwsem calls around it.

Fixes: 8a9782346d ("ASoC: topology: Add topology core")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20211116071812.18109-1-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Takashi Iwai 2021-11-16 08:18:12 +01:00 committed by Greg Kroah-Hartman
parent 4a4f900e04
commit 3a25def06d
1 changed files with 3 additions and 0 deletions
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3
sound/soc/soc-topology.c
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@ -2873,6 +2873,7 @@ EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove_all);
/* remove dynamic controls from the component driver */
int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
{
struct snd_card *card = comp->card->snd_card;
struct snd_soc_dobj *dobj, *next_dobj;
int pass = SOC_TPLG_PASS_END;
@ -2880,6 +2881,7 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
while (pass >= SOC_TPLG_PASS_START) {
/* remove mixer controls */
down_write(&card->controls_rwsem);
list_for_each_entry_safe(dobj, next_dobj, &comp->dobj_list,
list) {
@ -2923,6 +2925,7 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
break;
}
}
up_write(&card->controls_rwsem);
pass--;
}