ALSA: usb-audio: Add check return value for usb_string()

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snd_usb_copy_string_desc() returns zero if usb_string() fails.
In case of failure, we need to check the snd_usb_copy_string_desc()'s
return value and add an exception case

Signed-off-by: Jaejoong Kim <climbbb.kim@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Jaejoong Kim 2017-12-04 15:31:49 +09:00 • committed by Takashi Iwai

parent 251552a2b0

commit 89b89d121f

1 changed files with 5 additions and 4 deletions

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sound/usb/mixer.c

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