ALSA: timer: Protect the whole snd_timer_close() with open race
authorTakashi Iwai <tiwai@suse.de>
Wed, 10 Feb 2016 10:53:30 +0000 (11:53 +0100)
committerTakashi Iwai <tiwai@suse.de>
Wed, 10 Feb 2016 11:56:07 +0000 (12:56 +0100)
commit9984d1b5835ca29fc7025186a891ee7398d21cc7
treeeecd67335fe1c90124b76074a12b879a33f514ee
parent4dff5c7b7093b19c19d3a100f8a3ad87cb7cd9e7
ALSA: timer: Protect the whole snd_timer_close() with open race

In order to make the open/close more robust, widen the register_mutex
protection over the whole snd_timer_close() function.  Also, the close
procedure is slightly shuffled to be in the safer order, as well as a
few code refactoring.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/timer.c