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  1. 01 4月, 2009 2 次提交
  3. 06 2月, 2009 1 次提交
    • A
      fbmem: don't call copy_from/to_user() with mutex held · 1f5e31d7
      由 Andrea Righi 提交于 
      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: NAndrea Righi <righi.andrea@gmail.com>
Cc: Dave Jones <davej@redhat.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Johannes Weiner <hannes@saeurebad.de>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1f5e31d7
  5. 16 1月, 2009 1 次提交
  7. 22 12月, 2008 1 次提交
  9. 20 10月, 2008 1 次提交
  11. 21 8月, 2008 1 次提交
    • I
      fbdefio: add set_page_dirty handler to deferred IO FB · d847471d
      由 Ian Campbell 提交于 
      Fixes kernel BUG at lib/radix-tree.c:473.

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

  commit 14fcc23f
  Author: Hugh Dickins <hugh@veritas.com>
  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: NIan Campbell <ijc@hellion.org.uk>
Cc: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Johannes Weiner <hannes@saeurebad.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Kel Modderman <kel@otaku42.de>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: <stable@kernel.org> [14fcc23f is in 2.6.25.14 and 2.6.26.1]
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d847471d
  13. 25 7月, 2008 2 次提交
  15. 28 4月, 2008 1 次提交
    • A
      fb: add support for foreign endianness · e4c690e0
      由 Anton Vorontsov 提交于 
      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: NAnton Vorontsov <avorontsov@ru.mvista.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: <Valdis.Kletnieks@vt.edu>
Cc: Clemens Koller <clemens.koller@anagramm.de>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e4c690e0
  17. 17 10月, 2007 3 次提交
  19. 18 7月, 2007 2 次提交
  21. 01 6月, 2007 1 次提交
  23. 10 5月, 2007 1 次提交
  25. 09 5月, 2007 8 次提交
  27. 20 2月, 2007 2 次提交
    • R
      backlight: Rework backlight/fb interaction simplifying, lots · 37ce69a5
      由 Richard Purdie 提交于 
      fb_info->bl_mutex is badly thought out and the backlight class doesn't
need it if the framebuffer/backlight register/unregister order is
consistent, particularly after the backlight locking fixes.

Fix the drivers to use the order:

backlight_device_register()
register_framebuffer()
unregister_framebuffer()
backlight_device_unregister()

and turn bl_mutex into a lock for the bl_curve data only.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
      37ce69a5
    • R
      backlight/fbcon: Add FB_EVENT_CONBLANK · 994efacd
      由 Richard Purdie 提交于 
      The backlight class wants notification whenever the console is blanked
but doesn't get this when hardware blanking fails and software blanking
is used. Changing FB_EVENT_BLANK to report both would be a behaviour
change which could confuse the console layer so add a new event for
software blanking and have the backlight class listen for both.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
      994efacd
  29. 13 2月, 2007 2 次提交
  31. 14 12月, 2006 1 次提交
  33. 09 12月, 2006 1 次提交
  35. 02 12月, 2006 1 次提交
  37. 03 10月, 2006 2 次提交
  39. 15 8月, 2006 1 次提交
  41. 01 8月, 2006 1 次提交
  43. 11 7月, 2006 1 次提交
  45. 01 7月, 2006 1 次提交
  47. 27 6月, 2006 2 次提交
    • G
      [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree · ff23eca3
      由 Greg Kroah-Hartman 提交于 
      Also fixes up all files that #include it.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      ff23eca3
    • A
      [PATCH] VT binding: Update fbcon to support binding · e614b18d
      由 Antonino A. Daplas 提交于 
      The control for binding/unbinding is moved from fbcon to the console layer.
Thus the fbcon sysfs attributes, attach and detach, are also gone.

    1. Add a notifier event that tells fbcon if a framebuffer driver has been
       unregistered.  If no registered driver remains, fbcon will unregister
       itself from the console layer.

    2. Replaced calls to give_up_console() with unregister_con_driver().

    3. Still use take_over_console() instead of register_con_driver() to
       maintain compatibility

    4. Respect the parameter first_fb_vc and last_fb_vc instead of using 0 and
       MAX_NR_CONSOLES - 1. These parameters are settable by the user.

    5. When fbcon is completely unbound from the console layer, fbcon will
       also release (iow, decrement module reference counts to zero) all fbdev
       drivers. In other words, a bind or unbind request from the console layer
       will propagate down to the framebuffer drivers.

    6. If fbcon is not bound to the console, it will ignore all notifier
       events (except driver registration and unregistration) and all sysfs
       requests.
Signed-off-by: NAntonino Daplas <adaplas@pol.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      e614b18d