linux-kernel - [PATCH 3.12 111/235] ALSA: usb-audio: Fix bogus error return in snd_usb_create

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Message-Id: <7b0713fb9aa966f2c70679338ec08582c4e4d1cd.1485514374.git.jslaby@suse.cz>
Date:   Fri, 27 Jan 2017 11:54:04 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Takashi Iwai <tiwai@...e.de>,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 111/235] ALSA: usb-audio: Fix bogus error return in snd_usb_create_stream()

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

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 4763601a56f155ddf94ef35fc2c41504a2de15f5 upstream.

The function returns -EINVAL even if it builds the stream properly.
The bogus error code sneaked in during the code refactoring, but it
wasn't noticed until now since the returned error code itself is
ignored in anyway.  Kill it here, but there is no behavior change by
this patch, obviously.

Fixes: e5779998bf8b ('ALSA: usb-audio: refactor code')
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 sound/usb/card.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/sound/usb/card.c b/sound/usb/card.c
index 96a09226be7d..96a429945e3a 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -205,7 +205,6 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int
 	if (! snd_usb_parse_audio_interface(chip, interface)) {
 		usb_set_interface(dev, interface, 0); /* reset the current interface */
 		usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
-		return -EINVAL;
 	}
 
 	return 0;
-- 
2.11.0