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From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@alsa-project.org
Subject: [PATCH 3/3] ALSA: hda: Add missing rwsem around snd_ctl_remove() calls
Date: Tue, 16 Nov 2021 08:13:14 +0100	[thread overview]
Message-ID: <20211116071314.15065-3-tiwai@suse.de> (raw)
In-Reply-To: <20211116071314.15065-1-tiwai@suse.de>

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")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 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 0c4a337c9fc0..eda70814369b 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1727,8 +1727,11 @@ 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);
 }
-- 
2.31.1


      parent reply	other threads:[~2021-11-16  7:15 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-16  7:13 [PATCH 1/3] ALSA: jack: Add missing rwsem around snd_ctl_remove() calls Takashi Iwai
2021-11-16  7:13 ` [PATCH 2/3] ALSA: PCM: " Takashi Iwai
2021-11-16  7:13 ` Takashi Iwai [this message]

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