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From 06764dc931848c3a9bc01a63bbf76a605408bb54 Mon Sep 17 00:00:00 2001
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Takashi Iwai |
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From: Takashi Iwai <tiwai@suse.de>
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Takashi Iwai |
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Date: Tue, 16 Nov 2021 08:13:12 +0100
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Takashi Iwai |
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Subject: [PATCH] ALSA: jack: Add missing rwsem around snd_ctl_remove() calls
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Takashi Iwai |
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Git-commit: 06764dc931848c3a9bc01a63bbf76a605408bb54
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Takashi Iwai |
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Patch-mainline: v5.17-rc1
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Takashi Iwai |
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References: git-fixes
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Takashi Iwai |
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Takashi Iwai |
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snd_ctl_remove() has to be called with card->controls_rwsem held (when
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Takashi Iwai |
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called after the card instantiation). This patch add the missing
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Takashi Iwai |
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rwsem calls around it.
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Takashi Iwai |
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Takashi Iwai |
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Fixes: 9058cbe1eed2 ("ALSA: jack: implement kctl creating for jack devices")
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Link: https://lore.kernel.org/r/20211116071314.15065-1-tiwai@suse.de
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Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Takashi Iwai |
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Takashi Iwai |
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---
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Takashi Iwai |
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sound/core/jack.c | 3 +++
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Takashi Iwai |
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1 file changed, 3 insertions(+)
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Takashi Iwai |
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Takashi Iwai |
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diff --git a/sound/core/jack.c b/sound/core/jack.c
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Takashi Iwai |
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index 32350c6aba84..f50a1e920e1d 100644
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Takashi Iwai |
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--- a/sound/core/jack.c
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Takashi Iwai |
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+++ b/sound/core/jack.c
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@@ -62,10 +62,13 @@ static int snd_jack_dev_free(struct snd_device *device)
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Takashi Iwai |
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struct snd_card *card = device->card;
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Takashi Iwai |
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struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
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Takashi Iwai |
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Takashi Iwai |
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+ down_write(&card->controls_rwsem);
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list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) {
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list_del_init(&jack_kctl->list);
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Takashi Iwai |
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snd_ctl_remove(card, jack_kctl->kctl);
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Takashi Iwai |
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}
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Takashi Iwai |
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+ up_write(&card->controls_rwsem);
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Takashi Iwai |
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+
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if (jack->private_free)
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Takashi Iwai |
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jack->private_free(jack);
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Takashi Iwai |
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Takashi Iwai |
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--
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Takashi Iwai |
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2.31.1
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Takashi Iwai |
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