From: Oleksij Rempel <bug-track@fisher-privat.net>
Date: Tue, 19 Jun 2012 20:21:18 +0000 (+0200)
Subject: ALSA: snd_usb_audio: ignore ctrl errors on QuickCam E3500
X-Git-Tag: firefly_0821_release~3680^2~1845^2~139
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=05b9afd5b711b284c17f657495dc08f4a6f6e7e9;p=firefly-linux-kernel-4.4.55.git

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 41daaa24c25f..484603bbeb70 100644
--- 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),