Revert "ALSA: usb-audio: Fix race at stopping the stream"
authorTakashi Iwai <tiwai@suse.de>
Wed, 21 Dec 2016 10:28:28 +0000 (11:28 +0100)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 21 Dec 2016 17:48:14 +0000 (09:48 -0800)
commitf8114f8583bb18a467c04ddc1e8978330e445801
treed026ed5a64ee4abe4118e3e7b0fe9f342bda7459
parentba6d973f78eb62ffebb32f6ef3334fc9a3b33d22
Revert "ALSA: usb-audio: Fix race at stopping the stream"

This reverts commit 16200948d8353fe29a473a394d7d26790deae0e7.

The commit was intended to cover the race condition, but it introduced
yet another regression for devices with the implicit feedback, leading
to a kernel panic due to NULL-dereference in an irq context.

As the race condition that was addressed by the commit is very rare
and the regression is much worse, let's revert the commit for rc1, and
fix the issue properly in a later patch.

Fixes: 16200948d835 ("ALSA: usb-audio: Fix race at stopping the stream")
Reported-by: Ioan-Adrian Ratiu <adi@adirat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
sound/usb/endpoint.c