From 3e680aae4e53ab54cdbb0c29257dae0cbb158e1c Mon Sep 17 00:00:00 2001 From: Krzysztof Helt Date: Sat, 18 Oct 2008 20:27:51 -0700 Subject: fb: convert lock/unlock_kernel() into local fb mutex Change lock_kernel()/unlock_kernel() to local fb mutex. Each frame buffer instance has its own mutex. The one line try_to_load() function is unrolled to request_module() in two places for readability. [righi.andrea@gmail.com: fb: fix NULL pointer BUG dereference in fb_open()] Signed-off-by: Krzysztof Helt Signed-off-by: Andrea Righi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index 531ccd5f596..75a81eaf343 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -808,6 +808,7 @@ struct fb_tile_ops { struct fb_info { int node; int flags; + struct mutex lock; /* Lock for open/release/ioctl funcs */ struct fb_var_screeninfo var; /* Current var */ struct fb_fix_screeninfo fix; /* Current fix */ struct fb_monspecs monspecs; /* Current Monitor specs */ -- cgit v1.2.3