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

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[ Upstream commit 17f08b0d9aafccdb10038ab6dbd9ddb6433c13e2 ]

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: Alberto Aguirre <albaguirre@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alberto Aguirre 2017-04-04 19:32:13 +00:00 committed by Greg Kroah-Hartman
parent bedc629494
commit c0aac1bbb5
1 changed files with 10 additions and 0 deletions
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10
sound/usb/pcm.c
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@ -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 &&