ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204 (5e35dc03) · Commits · 戴 / test

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>

sound/usb/pcm.c

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -352,6 +352,15 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
	ep = 0x86;		ep = 0x86;
	iface = usb_ifnum_to_if(dev, 2);		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):
			ep = 0x81;
			iface = usb_ifnum_to_if(dev, 1);

	if (!iface \|\| iface->num_altsetting == 0)		if (!iface \|\| iface->num_altsetting == 0)
	return -EINVAL;		return -EINVAL;

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