diff mbox

ALSA: usb-audio: add implicit fb quirk for Axe-Fx II

Message ID 20161208213827.32518-1-albaguirre@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Alberto Aguirre Dec. 8, 2016, 9:38 p.m. UTC 
The Axe-Fx II implicit feedback end point and the data sink endpoint
are in different interface descriptors. Add quirk to ensure a sync
endpoint is properly configured.

Signed-off-by: Alberto Aguirre <albaguirre@gmail.com>
---
 sound/usb/pcm.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 44d178e..584f2a6 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -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): /* Fractal Audio Axe-Fx II */
+		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 &&