Messages in this thread Patch in this message | | | From | Lassi Ylikojola <> | Subject | [PATCH] ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204 | Date | Sat, 3 Feb 2018 16:42:40 +0200 |
| |
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> --- sound/usb/pcm.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index b9c9a19f9588..2d8b9e19e99b 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -352,6 +352,15 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, ep = 0x86; iface = usb_ifnum_to_if(dev, 2); + if (!iface || iface->num_altsetting == 0) + return -EINVAL; + + alts = &iface->altsetting[1]; + goto add_sync_ep; + case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */ + ep = 0x81; + iface = usb_ifnum_to_if(dev, 1); + if (!iface || iface->num_altsetting == 0) return -EINVAL; -- 2.14.3
| |