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ALSA: usb-audio: Add implicit feedback quirk for SSL2+.
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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>
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Laurence Tratt authored and Takashi Iwai committed Jun 12, 2020
1 parent adb36a8 commit e7585db
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1 change: 1 addition & 0 deletions sound/usb/pcm.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
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