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ALSA: ice1712: Do not left ice->gpio_mutex locked in aureon_add_controls()

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commit 951606a14a upstream.

If snd_ctl_add() fails in aureon_add_controls(), it immediately returns
and leaves ice->gpio_mutex locked. ice->gpio_mutex locks in
snd_ice1712_save_gpio_status and unlocks in
snd_ice1712_restore_gpio_status(ice).

It seems that the mutex is required only for aureon_cs8415_get(),
so snd_ice1712_restore_gpio_status(ice) can be placed
just after that. Compile tested only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Dmitry Fomin <fomindmitriyfoma@mail.ru>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230225184322.6286-1-fomindmitriyfoma@mail.ru
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Fomin 2023-02-25 21:43:21 +03:00 committed by Greg Kroah-Hartman
parent 281c1cf41e
commit fba46bffef
1 changed files with 1 additions and 1 deletions
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2
sound/pci/ice1712/aureon.c
View file

@ -1906,6 +1906,7 @@ static int aureon_add_controls(struct snd_ice1712 *ice)
unsigned char id;
snd_ice1712_save_gpio_status(ice);
id = aureon_cs8415_get(ice, CS8415_ID);
snd_ice1712_restore_gpio_status(ice);
if (id != 0x41)
dev_info(ice->card->dev,
"No CS8415 chip. Skipping CS8415 controls.\n");
@ -1923,7 +1924,6 @@ static int aureon_add_controls(struct snd_ice1712 *ice)
kctl->id.device = ice->pcm->device;
}
}
snd_ice1712_restore_gpio_status(ice);
}
return 0;