Takashi Iwai 2ee0b454fd ALSA: usb-audio: Skip generic sync EP parse for secondary EP
commit efb75df105e82f076a85b9f2d81410428bcb55fc upstream.

When ep_idx is already non-zero, it means usually a capture stream
that is set up explicity by a fixed-format quirk, and applying the
check for generic (non-implicit-fb) sync EPs might hit incorrectly,
resulting in a bogus sync endpoint for the capture stream.

This patch adds a check for the ep_idx and skip if it's a secondary
endpoint.  It's a part of the fixes for regressions on Saffire 6.

Fixes: 7b0efea4baf0 ("ALSA: usb-audio: Add missing ep_idx in fixed EP quirks")
Reported-and-tested-by: André Kapelrud <a.kapelrud@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220606160910.6926-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-14 18:36:24 +02:00
..
2021-09-03 15:33:47 -07:00
2022-04-08 14:23:19 +02:00
2021-04-27 08:39:39 +02:00
2021-03-07 09:07:16 +01:00
2021-03-07 09:07:16 +01:00