1. 03 Jul, 2013 1 commit
  2. 06 Feb, 2013 1 commit
  3. 17 Dec, 2012 1 commit
  4. 29 May, 2012 1 commit
  5. 10 Jan, 2012 1 commit
  6. 10 Sep, 2011 1 commit
  7. 22 Mar, 2011 1 commit
    • Matthew Garrett's avatar
      backlight: add backlight type · bb7ca747
      Matthew Garrett authored
      There may be multiple ways of controlling the backlight on a given
      machine.  Allow drivers to expose the type of interface they are
      providing, making it possible for userspace to make appropriate policy
      decisions.
      Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
      Cc: Richard Purdie <rpurdie@rpsys.net>
      Cc: Chris Wilson <chris@chris-wilson.co.uk>
      Cc: David Airlie <airlied@linux.ie>
      Cc: Alex Deucher <alexdeucher@gmail.com>
      Cc: Ben Skeggs <bskeggs@redhat.com>
      Cc: Zhang Rui <rui.zhang@intel.com>
      Cc: Len Brown <lenb@kernel.org>
      Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      bb7ca747
  8. 24 Nov, 2010 1 commit
  9. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  10. 16 Mar, 2010 2 commits
  11. 16 Dec, 2009 1 commit
  12. 26 Sep, 2009 1 commit
  13. 21 Sep, 2009 1 commit
  14. 13 Apr, 2009 1 commit
  15. 01 Apr, 2009 1 commit
  16. 08 Jan, 2009 3 commits
  17. 06 Jan, 2009 1 commit
  18. 23 Jul, 2008 1 commit
  19. 07 Feb, 2008 1 commit
  20. 11 Oct, 2007 1 commit
  21. 15 Jul, 2007 1 commit
  22. 11 Jul, 2007 1 commit
    • Tejun Heo's avatar
      sysfs: kill unnecessary attribute->owner · 7b595756
      Tejun Heo authored
      sysfs is now completely out of driver/module lifetime game.  After
      deletion, a sysfs node doesn't access anything outside sysfs proper,
      so there's no reason to hold onto the attribute owners.  Note that
      often the wrong modules were accounted for as owners leading to
      accessing removed modules.
      
      This patch kills now unnecessary attribute->owner.  Note that with
      this change, userland holding a sysfs node does not prevent the
      backing module from being unloaded.
      
      For more info regarding lifetime rule cleanup, please read the
      following message.
      
        http://article.gmane.org/gmane.linux.kernel/510293
      
      (tweaked by Greg to not delete the field just yet, to make it easier to
      merge things properly.)
      Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
      Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      7b595756
  23. 20 Feb, 2007 7 commits
  24. 19 Dec, 2006 1 commit
    • Yu Luming's avatar
      ACPI: video: Add dev argument for backlight_device_register · 519ab5f2
      Yu Luming authored
      This patch set adds generic abstract layer support for acpi video driver to
      have generic user interface to control backlight and output switch control by
      leveraging the existing backlight sysfs class driver, and by adding a new
      video output sysfs class driver.
      
      This patch:
      
      Add dev argument for backlight_device_register to link the class device to
      real device object.  The platform specific driver should find a way to get the
      real device object for their video device.
      
      [akpm@osdl.org: build fix]
      [akpm@osdl.org: fix msi-laptop.c]
      Signed-off-by: default avatarLuming Yu <Luming.yu@intel.com>
      Cc: "Antonino A. Daplas" <adaplas@pol.net>
      Cc: Greg KH <greg@kroah.com>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      519ab5f2
  25. 08 Dec, 2006 3 commits
  26. 15 May, 2006 1 commit
  27. 31 Mar, 2006 1 commit
    • Richard Purdie's avatar
      [PATCH] backlight: Backlight Class Improvements · 6ca01765
      Richard Purdie authored
      Backlight class attributes are currently easy to implement incorrectly.
      Moving certain handling into the backlight core prevents this whilst at the
      same time makes the drivers simpler and consistent.  The following changes are
      included:
      
      The brightness attribute only sets and reads the brightness variable in the
      backlight_properties structure.
      
      The power attribute only sets and reads the power variable in the
      backlight_properties structure.
      
      Any framebuffer blanking events change a variable fb_blank in the
      backlight_properties structure.
      
      The backlight driver has only two functions to implement.  One function is
      called when any of the above properties change (to update the backlight
      brightness), the second is called to return the current backlight brightness
      value.  A new attribute "actual_brightness" is added to return this brightness
      as determined by the driver having combined all the above factors (and any
      driver/device specific factors).
      
      Additionally, the backlight core takes care of checking the maximum brightness
      is not exceeded and of turning off the backlight before device removal.
      
      The corgi backlight driver is updated to reflect these changes.
      Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
      Signed-off-by: default avatarAntonino Daplas <adaplas@pol.net>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      6ca01765
  28. 09 Mar, 2006 1 commit
  29. 07 Feb, 2006 1 commit