[PATCH 3.14 22/44] ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion

From: Greg Kroah-Hartman
Date: Fri Jun 19 2015 - 17:04:46 EST


3.14-stable review patch. If anyone has any objections, please let me know.

------------------

From: Wolfram Sang <wsa@xxxxxxxxxxxxx>

commit 1ef9f0583514508bc93427106ceef3215e4eb1a5 upstream.

Fix this from the logs:

usb 7-1: New USB device found, idVendor=046d, idProduct=08ca
...
usb 7-1: Warning! Unlikely big volume range (=3072), cval->res is probably wrong.
usb 7-1: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1

Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
sound/usb/mixer.c | 1 +
1 file changed, 1 insertion(+)

--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -891,6 +891,7 @@ static void volume_control_quirks(struct
case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */
case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */
case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
+ case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */
case USB_ID(0x046d, 0x0991):
/* Most audio usb devices lie about volume resolution.
* Most Logitech webcams have res = 384.


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