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

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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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Takashi Iwai 2014-10-20 18:08:50 +02:00

parent df803e1389

commit a7e6fb9915

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sound/core/control.c

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