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authorDavid Henningsson <david.henningsson@canonical.com>2012-09-20 10:20:41 +0200
committerTakashi Iwai <tiwai@suse.de>2012-09-20 10:48:47 +0200
commitc10514394ef9e8de93a4ad8c8904d71dcd82c122 (patch)
tree91ac6afe012f906694fec62e4ea478f3d56ec603
parentc40bd914a80e067ad87aa5c587e590873ebb97e2 (diff)
ALSA: usb - disable broken hw volume for Tenx TP6911
While going through Ubuntu bugs, I discovered this patch being posted and a confirmation that the patch works as expected. Finding out how the hw volume really works would be preferrable to just disabling the broken one, but this would be better than nothing. Credit: sndfnsdfin (qawsnews) BugLink: https://bugs.launchpad.net/bugs/559939 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/usb/mixer.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 4f40ba82316..fe56c9da38e 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1267,6 +1267,13 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
/* disable non-functional volume control */
master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME);
break;
+ case USB_ID(0x1130, 0xf211):
+ snd_printk(KERN_INFO
+ "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n");
+ /* disable non-functional volume control */
+ channels = 0;
+ break;
+
}
if (channels > 0)
first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize);