linux-kernel - [PATCH AUTOSEL 4.9 122/251] ALSA: usb-audio: Handle the error from snd_usb_mixer_apply_create

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Message-Id: <20200116173641.22137-82-sashal@kernel.org>
Date:   Thu, 16 Jan 2020 12:34:31 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Takashi Iwai <tiwai@...e.de>, Sasha Levin <sashal@...nel.org>,
        alsa-devel@...a-project.org
Subject: [PATCH AUTOSEL 4.9 122/251] ALSA: usb-audio: Handle the error from snd_usb_mixer_apply_create_quirk()

From: Takashi Iwai <tiwai@...e.de>

[ Upstream commit 328e9f6973be2ee67862cb17bf6c0c5c5918cd72 ]

The error from snd_usb_mixer_apply_create_quirk() is ignored in the
current usb-audio driver code, which will continue the probing even
after the error.  Let's take it more serious.

Fixes: 7b1eda223deb ("ALSA: usb-mixer: factor out quirks")
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/usb/mixer.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 64fa1bbf0acb..54011f8543a7 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -2626,7 +2626,9 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
 	    (err = snd_usb_mixer_status_create(mixer)) < 0)
 		goto _error;
 
-	snd_usb_mixer_apply_create_quirk(mixer);
+	err = snd_usb_mixer_apply_create_quirk(mixer);
+	if (err < 0)
+		goto _error;
 
 	err = snd_device_new(chip->card, SNDRV_DEV_CODEC, mixer, &dev_ops);
 	if (err < 0)
-- 
2.20.1