ALSA: ctl: Stop notification after disconnection

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[ Upstream commit f388cdcdd1 ]

snd_ctl_remove() has a notification for the removal event.  It's
superfluous when done during the device got disconnected.  Although
the notification itself is mostly harmless, it may potentially be
harmful, and should be suppressed.  Actually some components PCM may
free ctl elements during the disconnect or free callbacks, thus it's
no theoretical issue.

This patch adds the check of card->shutdown flag for avoiding
unnecessary notifications after (or during) the disconnect.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

...

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Takashi Iwai 2016-07-08 08:05:19 +02:00 • committed by Sasha Levin

parent ee5dc42072

commit 77dee6b719

1 changed files with 2 additions and 0 deletions

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sound/core/control.c

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