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ALSA: snd_usb_audio: ignore ctrl errors on QuickCam Pro for Notebooks 

This webcam works mostly ok, exept with skype.
Skype sends lots of ctrl messages to dynamically ajust
record level. If for some reasons it pokes some error
every thing goes broken:
- first pulseaudio blocks sound for all apps
- then video is reseted
- then skype freez

dmesg has lots of messages like:
cannot set freq 16000 to ep 0x86"

Setting ignore_ctl_error=1 fixes this problem.

Signed-off-by: Oleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Oleksij Rempel 2012-06-19 22:21:19 +02:00 committed by Takashi Iwai
parent 05b9afd5b7
commit b64a1ba9d3
1 changed files with 4 additions and 0 deletions
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4
sound/usb/mixer_maps.c
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@ -341,6 +341,10 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
.map = audigy2nx_map,
.selector_map = audigy2nx_selectors,
},
{ /* Logitech, Inc. QuickCam Pro for Notebooks */
.id = USB_ID(0x046d, 0x0991),
.ignore_ctl_error = 1,
},
{ /* Logitech, Inc. QuickCam E 3500 */
.id = USB_ID(0x046d, 0x09a4),
.ignore_ctl_error = 1,