diff options
| author | Omair Mohammed Abdullah <omair.m.abdullah@linux.intel.com> | 2012-09-29 12:24:05 +0530 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-10-17 03:49:42 +0100 |
| commit | 1fd7e28a2d9dec2c758bf43b92b1613dd22161d6 (patch) | |
| tree | 8f3d0e78da1c2deb78b72ce99ec8c60474f685c9 /drivers | |
| parent | 7737238648b535686434fdb1717b10d4c4f7c6d8 (diff) | |
ALSA: aloop - add locking to timer access
commit d4f1e48bd11e3df6a26811f7a1f06c4225d92f7d upstream.
When the loopback timer handler is running, calling del_timer() (for STOP
trigger) will not wait for the handler to complete before deactivating the
timer. The timer gets rescheduled in the handler as usual. Then a subsequent
START trigger will try to start the timer using add_timer() with a timer pending
leading to a kernel panic.
Serialize the calls to add_timer() and del_timer() using a spin lock to avoid
this.
Signed-off-by: Omair Mohammed Abdullah <omair.m.abdullah@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions