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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 /sound/usb/mixer.c
parentALSA: hda - avoid non-standard "Docking" name in mixers (diff)
downloadlinux-c10514394ef9e8de93a4ad8c8904d71dcd82c122.tar.xz
linux-c10514394ef9e8de93a4ad8c8904d71dcd82c122.zip
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>
Diffstat (limited to 'sound/usb/mixer.c')
-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 4f40ba823163..fe56c9da38e9 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);