From: Takashi Iwai tiwai@suse.de
[ Upstream commit 80bd64af75b4bb11c0329bc66c35da2ddfb66d88 ]
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: d13bd412dce2 ("ALSA: hda - Manage kcontrol lists") Link: https://lore.kernel.org/r/20211116071314.15065-3-tiwai@suse.de Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- sound/pci/hda/hda_codec.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 326f95ce5ceb1..c8847de8388f0 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1721,8 +1721,11 @@ void snd_hda_ctls_clear(struct hda_codec *codec) { int i; struct hda_nid_item *items = codec->mixers.list; + + down_write(&codec->card->controls_rwsem); for (i = 0; i < codec->mixers.used; i++) snd_ctl_remove(codec->card, items[i].kctl); + up_write(&codec->card->controls_rwsem); snd_array_free(&codec->mixers); snd_array_free(&codec->nids); }