ALSA: snd_usb_audio: ignore ctrl errors on QuickCam E3500

if this cam is pluged in, pulse audio can't initiate capture
device.
dmesg has lots of messages like:
"cannot set freq 16000 to ep 0x86"

Setting ignore_ctl_error=1 fixes this problem.

Signed-off-by: Oleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index 41daaa2..484603b 100644 (file)
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -341,6 +341,10 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
                .map = audigy2nx_map,
                .selector_map = audigy2nx_selectors,
        },
+       {       /* Logitech, Inc. QuickCam E 3500 */
+               .id = USB_ID(0x046d, 0x09a4),
+               .ignore_ctl_error = 1,
+       },
        {
                /* Hercules DJ Console (Windows Edition) */
                .id = USB_ID(0x06f8, 0xb000),