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Commit 17f08b0d authored by Alberto Aguirre's avatar Alberto Aguirre Committed by Takashi Iwai
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ALSA: usb-audio: add implicit fb quirk for Axe-Fx II 



The Axe-Fx II implicit feedback end point and the data sync endpoint
are in different interface descriptors. Add quirk to ensure a sync
endpoint is properly configured.

Signed-off-by: default avatarAlberto Aguirre <albaguirre@gmail.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 048ea6df

sound/usb/pcm.c

+10 −0
Original line number Diff line number Diff line
@@ -348,6 +348,16 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, 


		alts = &iface->altsetting[1];

		goto add_sync_ep;

	case USB_ID(0x2466, 0x8003):

		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;



	}

	if (attr == USB_ENDPOINT_SYNC_ASYNC &&

	    altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC &&