mirror of https://gitee.com/openkylin/linux.git
c945cbcf45
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> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| ledtrig-backlight.c | ||
| ledtrig-camera.c | ||
| 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 | ||