From: Eldad Zack <eldad@fogrefinery.com>
Date: Sat, 3 Aug 2013 08:51:15 +0000 (+0200)
Subject: ALSA: usb-audio: WARN_ON when alts is passed as NULL
X-Git-Tag: v3.12-rc1~150^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7e58df8ef3c9edb09a240084b4e0523c12bcb71;p=pandora-kernel.git

ALSA: usb-audio: WARN_ON when alts is passed as NULL

Prevent NULL dereference in snd_usb_add_endpoints(), when
alts is passed as NULL. In this case, WARN (since this is
a non-fatal bug) and return NULL ep. Call sites treat a NULL
return value as an error.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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