Manfred Schlaegl c945cbcf45 leds: trigger: ledtrig-backlight: Fix invalid memory access in fb_event notification callback ... fb_notifier_callback is called on any event fired by fb_notifier_call_chain. Events may, or may not contain some data (fb_event.data). In case of FB_EVENT_BLANK fb_event.data contains a pointer to an integer holdingthe blank state. The Problem is, that in ledtrig-backlight.c - fb_notifier_callback the pointer to blank state is dereferenced BEFORE the event-type is checked. Obviously this leads to problems with other events than FB_EVENT_BLANK, where fb_event.data is undefined or NULL. It seems, that this problem existed ever since the driver was added. Like in drivers/video/backlight/backlight.c line 43 I would suggest to return immediately on events other than FB_EVENT_BLANK. Signed-off-by: Manfred Schlaegl <manfred.schlaegl@gmx.at> Signed-off-by: Bryan Wu <cooloney@gmail.com>		2013-08-26 17:46:36 -07:00
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Kconfig	leds: add camera LED triggers	2013-04-01 11:04:50 -07:00
ledtrig-backlight.c	leds: trigger: ledtrig-backlight: Fix invalid memory access in fb_event notification callback	2013-08-26 17:46:36 -07:00
ledtrig-camera.c	leds: add camera LED triggers	2013-04-01 11:04:50 -07:00
ledtrig-cpu.c
ledtrig-default-on.c
ledtrig-gpio.c
ledtrig-heartbeat.c
ledtrig-ide-disk.c
ledtrig-oneshot.c
ledtrig-timer.c
ledtrig-transient.c
Makefile	leds: add camera LED triggers	2013-04-01 11:04:50 -07:00