1 files changed, 13 insertions, 0 deletions

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 6939d0f517d9..736d134cc03c 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1107,6 +1107,19 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
                 }
                 break;
 
+        case USB_ID(0x046d, 0x0809):
+        case USB_ID(0x046d, 0x0991):
+        /* Most audio usb devices lie about volume resolution.
+         * Most Logitech webcams have res = 384.
+         * Proboly there is some logitech magic behind this number --fishor
+         */
+                if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
+                        snd_printk(KERN_INFO
+                                "set resolution quirk: cval->res = 384\n");
+                        cval->res = 384;
+                }
+                break;
+
         }
 
         snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",