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ALSA: usb-audio: support partially write-protected UAC2 controls
authorDaniel Mack <daniel@caiaq.de>
Mon, 31 May 2010 11:35:37 +0000 (13:35 +0200)
committerTakashi Iwai <tiwai@suse.de>
Mon, 31 May 2010 16:15:57 +0000 (18:15 +0200)
commita6a3325913efbe35a10e87fd3e9c3ce621fd32c7
tree4b3300083115516ff8fff200da4d4300dea3b853tree | snapshot
parentdcbe7bcfa32c5bc4f9bb6c75d4d41bb4db8c36fccommit | diff
ALSA: usb-audio: support partially write-protected UAC2 controls

So far, UAC2 controls are marked read-only if any of the channels are
marked read-only in the descriptors. Change this behaviour and

 - mark them writeable unless all channels are read-only
 - store the read-only mask in usb_mixer_elem_info and
 - check the mask again in set_cur_mix_value(), and bail out for
   write-protected channels.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/usb/mixer.c diff | blob | history
sound/usb/mixer.h diff | blob | history
Domain: SCM / Uncategorized;