ALSA: usb-audio: Add implicit feedback quirk for SSL2+.

This uses the same quirk as the Motu M2 and M4 to ensure the driver uses the
audio interface's clock. Tested on an SSL2+.

Signed-off-by: Laurence Tratt <laurie@tratt.net>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200612111807.dgnig6rwhmsl2bod@overdrive.tratt.net
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 8a05dcb1344fda32698c5ecac9d76580c53b327e..84c0ae431936ee4996b8c5f97146583146c5aa78 100644 (file)
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -367,6 +367,7 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
                ifnum = 0;
                goto add_sync_ep_from_ifnum;
        case USB_ID(0x07fd, 0x0008): /* MOTU M Series */
+       case USB_ID(0x31e9, 0x0002): /* Solid State Logic SSL2+ */
                ep = 0x81;
                ifnum = 2;
                goto add_sync_ep_from_ifnum;