linux-stable.git/include/linux/fb.h, branch linux-2.6.29.y

fbmem: don't call copy_from/to_user() with mutex held

2009-02-05T20:56:46+00:00

Avoid calling copy_from/to_user() with fb_info->lock mutex held in fbmem
ioctl().

fb_mmap() is called under mm->mmap_sem (A) held, that also acquires
fb_info->lock (B); fb_ioctl() takes fb_info->lock (B) and does
copy_from/to_user() that might acquire mm->mmap_sem (A), causing a
deadlock.

NOTE: it doesn't push down the fb_info->lock in each own driver's
fb_ioctl(), so there are still potential deadlocks elsewhere.

Signed-off-by: Andrea Righi 
Cc: Dave Jones 
Cc: "Rafael J. Wysocki" 
Cc: Johannes Weiner 
Cc: Krzysztof Helt 
Cc: Harvey Harrison 
Cc: Stefan Richter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

include of is preferred over

2009-01-16T00:39:41+00:00

Impact: fix 15 make headers_check warnings:

include of  is preferred over 

Signed-off-by: Jaswinder Singh Rajput 
Cc: Ingo Molnar 
Cc: Sam Ravnborg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fb: SH-5 uses __raw I/O accessors now also, drop the special casing.

2008-12-22T09:44:05+00:00

Signed-off-by: Paul Mundt

fb: convert lock/unlock_kernel() into local fb mutex

2008-10-20T15:52:36+00:00

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

fbdefio: add set_page_dirty handler to deferred IO FB

2008-08-20T22:40:32+00:00

Fixes kernel BUG at lib/radix-tree.c:473.

Previously the handler was incidentally provided by tmpfs but this was
removed with:

  commit 14fcc23fdc78e9d32372553ccf21758a9bd56fa1
  Author: Hugh Dickins 
  Date:   Mon Jul 28 15:46:19 2008 -0700

    tmpfs: fix kernel BUG in shmem_delete_inode

relying on this behaviour was incorrect in any case and the BUG also
appeared when the device node was on an ext3 filesystem.

v2: override a_ops at open() time rather than mmap() time to minimise
races per AKPM's concerns.

Signed-off-by: Ian Campbell 
Cc: Jaya Kumar 
Cc: Nick Piggin 
Cc: Peter Zijlstra 
Cc: Hugh Dickins 
Cc: Johannes Weiner 
Cc: Jeremy Fitzhardinge 
Cc: Kel Modderman 
Cc: Markus Armbruster 
Cc: Krzysztof Helt 
Cc:  [14fcc23fd is in 2.6.25.14 and 2.6.26.1]
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

video/fb: cleanup FB_MAJOR usage

2008-07-24T17:47:41+00:00

Currently, linux/major.h defines a GRAPHDEV_MAJOR (29) that nobody uses,
and linux/fb.h defines the real FB_MAJOR (also 29), that only fbmem.c
needs.  Drop GRAPHDEV_MAJOR from major.h, move FB_MAJOR definition from
fb.h to major.h, and fix fbmem.c to use major.h's definition.

Signed-off-by: Philippe De Muyter 
Cc: Krzysztof Helt 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tridentfb: acceleration constants change

2008-07-24T17:47:36+00:00

This patch replaces deprecated constant FB_ACCELF_TEXT with
FBINFO_HWACCEL_DISABLED and adds constants for Trident families of
accelerators.

The FBINFO_HWACCEL_DISABLED is correctly used so noaccel parameter works
now.

Signed-off-by: Krzysztof Helt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fb: add support for foreign endianness

2008-04-28T15:58:35+00:00

Add support for the framebuffers with non-native endianness.  This is done via
FBINFO_FOREIGN_ENDIAN flag that will be used by the drivers.  Depending on the
host endianness this flag will be overwritten by FBINFO_BE_MATH internal flag,
or cleared.

Tested to work on MPC8360E-RDK (BE) + Fujitsu MINT framebuffer (LE).

Signed-off-by: Anton Vorontsov 
Cc: "Antonino A. Daplas" 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: 
Cc: Clemens Koller 
Cc: Krzysztof Helt 
Cc: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fb: move and rename extern declaration for global_mode_option

2007-10-16T16:43:22+00:00

Move the extern declaration for global_mode_option to  and rename
the variable to fb_mode_option.

Signed-off-by: Geert Uytterhoeven 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Intel FB: more interlaced mode support

2007-10-16T16:43:20+00:00

Intel FB: allow odd- and even-field-first in interlaced modes, and
proper sync to vertical retrace

Signed-off-by: Krzysztof Halasa 
Cc: "Antonino A. Daplas" 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds