From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 20 Oct 2014 16:08:50 +0000 (+0200)
Subject: ALSA: control: Allow to pass items zero to snd_ctl_enum_info()
X-Git-Tag: omap-for-v3.19/fixes-rc1~126^2~21^2~105^2~40
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7e6fb99150ebb2852ebd0e7bad9ce37cc9a79dd;p=pandora-kernel.git

ALSA: control: Allow to pass items zero to snd_ctl_enum_info()

Although this is weird, some drivers want to allow empty control
elements intentionally, e.g. the number of items may change depending
on the firmware status.  Let the function simply returning in such a
case.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
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