linux/drivers/video/i810
Krzysztof Helt 537a1bf059 fbdev: add mutex for fb_mmap locking
Add a mutex to avoid a circular locking problem between the mm layer
semaphore and fbdev ioctl mutex through the fb_mmap() call.

Also, add mutex to all places where smem_start and smem_len fields change
so the mutex inside the fb_mmap() is actually used.  Changing of these
fields before calling the framebuffer_register() are not mutexed.

This is 2.6.31 material.  It removes one lockdep (fb_mmap() and
register_framebuffer()) but there is still another one (fb_release() and
register_framebuffer()).  It also cleans up handling of the smem_start and
smem_len fields used by mutexed section of the fb_mmap().

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30 18:56:00 -07:00
..
i810_accel.c i810: fix sparse warnings 2009-01-06 15:59:27 -08:00
i810_dvt.c
i810_gtf.c [PATCH] drivers/video/: possible cleanups 2006-01-10 08:01:56 -08:00
i810_main.c fbdev: add mutex for fb_mmap locking 2009-06-30 18:56:00 -07:00
i810_main.h [PATCH] drivers/video/: possible cleanups 2006-01-10 08:01:56 -08:00
i810_regs.h
i810-i2c.c i2c: Delete many unused adapter IDs 2009-01-26 21:19:52 +01:00
i810.h i810fb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
Makefile