Martin Peres d3f09691b3 drm/nouveau/pm/fan: drop the fan lock in fan_update() before rescheduling ...

commit 61679fe153 upstream.

This should fix a deadlock that has been reported to us where fan_update()
would hold the fan lock and try to grab the alarm_program_lock to reschedule
an update. On an other CPU, the alarm_program_lock would have been taken
before calling fan_update(), leading to a deadlock.

We should Cc: <stable@vger.kernel.org> # 3.9+

Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Tested-by: Timothée Ravier <tim@siosm.fr>
Tested-by: Boris Fersing (IRC nick fersingb, no public email address)
Signed-off-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-06-07 13:25:34 -07:00

..

drm

drm/nouveau/pm/fan: drop the fan lock in fan_update() before rescheduling

2014-06-07 13:25:34 -07:00

host1x

gpu: host1x: handle the correct # of syncpt regs

2014-06-07 13:25:30 -07:00

vga

fbcon: fix locking harder

2013-02-08 12:02:43 +10:00

Makefile

gpu: host1x: Add host1x driver

2013-04-22 12:32:40 +02:00