ALSA: usb-audio: revert to IMPLICIT_FB_FIXED_DEV for M-Audio FastTrack Ultra
authorMatteo Martelli <matteomartelli3@gmail.com>
Fri, 11 Feb 2022 22:49:13 +0000 (23:49 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 23 Feb 2022 11:03:13 +0000 (12:03 +0100)
commit2c9a7e11127ef8b4748e354777c35edb2878cbaf
tree32273f288ba35de4d86cb34b57e0e0b25b2dd22a
parent7285daaca3cd5178e731ea1808dd440aceb6d0d5
ALSA: usb-audio: revert to IMPLICIT_FB_FIXED_DEV for M-Audio FastTrack Ultra

commit 19d20c7a29bf2e46ff1ab8e8c4fcd2da8a4f38e2 upstream.

Commit 83b7dcbc51c930fc2079ab6c6fc9d719768321f1 introduced a generic
implicit feedback parser, which fails to execute for M-Audio FastTrack
Ultra sound cards. The issue is with the ENDPOINT_SYNCTYPE check in
add_generic_implicit_fb() where the SYNCTYPE is ADAPTIVE instead of ASYNC.
The reason is that the sync type of the FastTrack output endpoints are
set to adaptive in the quirks table since commit
65f04443c96dbda11b8fff21d6390e082846aa3c.

Fixes: 83b7dcbc51c9 ("ALSA: usb-audio: Add generic implicit fb parsing")
Signed-off-by: Matteo Martelli <matteomartelli3@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220211224913.20683-2-matteomartelli3@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sound/usb/implicit.c