| From 5e35dc0338d85ccebacf3f77eca1e5dea73155e8 Mon Sep 17 00:00:00 2001 |
| From: Lassi Ylikojola <lassi.ylikojola@gmail.com> |
| Date: Fri, 9 Feb 2018 16:51:36 +0200 |
| Subject: ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204 |
| |
| From: Lassi Ylikojola <lassi.ylikojola@gmail.com> |
| |
| commit 5e35dc0338d85ccebacf3f77eca1e5dea73155e8 upstream. |
| |
| Add quirk to ensure a sync endpoint is properly configured. |
| This patch is a fix for same symptoms on Behringer UFX1204 as patch |
| from Albertto Aquirre on Dec 8 2016 for Axe-Fx II. |
| |
| Signed-off-by: Lassi Ylikojola <lassi.ylikojola@gmail.com> |
| Cc: <stable@vger.kernel.org> |
| Signed-off-by: Takashi Iwai <tiwai@suse.de> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| sound/usb/pcm.c | 9 +++++++++ |
| 1 file changed, 9 insertions(+) |
| |
| --- a/sound/usb/pcm.c |
| +++ b/sound/usb/pcm.c |
| @@ -348,6 +348,15 @@ static int set_sync_ep_implicit_fb_quirk |
| |
| alts = &iface->altsetting[1]; |
| goto add_sync_ep; |
| + case USB_ID(0x1397, 0x0002): |
| + ep = 0x81; |
| + iface = usb_ifnum_to_if(dev, 1); |
| + |
| + if (!iface || iface->num_altsetting == 0) |
| + return -EINVAL; |
| + |
| + alts = &iface->altsetting[1]; |
| + goto add_sync_ep; |
| } |
| if (attr == USB_ENDPOINT_SYNC_ASYNC && |
| altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
