[alsa-devel] [PATCH] Fix invalid volume resolution for Logitech HD Webcam C525

[Greg KH]

On Wed, Aug 07, 2013 at 11:24:46PM +0400, Бойко Максим wrote:
> From: Maksim Boyko <maksim.a.boyko at gmail.com>
> 
> Add the volume control quirk for avoiding the kernel warning for Logitech HD Webcam C525.
> The similar patch was previously reported for Logitech HD Webcam C310 (see 36691e1be6ec551eef4a5225f126a281f8c051c2).
> 
> --- linux-3.10.5-orig/sound/usb/mixer.c	2013-08-04 12:51:49.000000000 +0400
> +++ linux-3.10.5/sound/usb/mixer.c	2013-08-06 21:12:42.274197287 +0400
> @@ -888,6 +888,7 @@
>          case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */
>          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, 0x0991):
>          /* Most audio usb devices lie about volume resolution.
>           * Most Logitech webcams have res = 384.


<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

</formletter>