4.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lassi Ylikojola <lassi.ylikoj...@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.ylikoj...@gmail.com>
Cc: <sta...@vger.kernel.org>
Signed-off-by: Takashi Iwai <ti...@suse.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
sound/usb/pcm.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -357,6 +357,15 @@ 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 &&
