At Thu, 20 Sep 2012 10:20:41 +0200, David Henningsson wrote:

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

Applied now. Thanks.

Takashi

---

sound/usb/mixer.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 4f40ba8..fe56c9d 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);

-- 1.7.9.5