diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-11-24 12:57:14 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-09 13:27:01 -0800 |
| commit | a9386a4f6cf9c1b72862ac0aa4ffe02a22c1bd5b (patch) | |
| tree | d91b1d065e2cb0d269a38a4b7a2b4f1691376f64 /mm | |
| parent | 20fa2a2005e86e5628941c5e23fbc4682824473e (diff) | |
backlight: grab ops_lock before testing bd->ops
commit d1d73578e053b981c3611e5a211534290d24a5eb upstream.
According to the comment describing ops_lock in the definition of struct
backlight_device and when comparing with other functions in backlight.c
the mutex must be hold when checking ops to be non-NULL.
Fixes a problem added by c835ee7f4154992e6 ("backlight: Add suspend/resume
support to the backlight core") in Jan 2009.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions