1. 14 9月, 2012 1 次提交
  2. 11 9月, 2012 2 次提交
  3. 12 5月, 2012 1 次提交
  4. 25 2月, 2012 1 次提交
  5. 13 1月, 2012 1 次提交
  6. 19 5月, 2011 1 次提交
    • G
      drivercore: revert addition of of_match to struct device · b1608d69
      Grant Likely 提交于
      Commit b826291c, "drivercore/dt: add a match table pointer to struct
      device" added an of_match pointer to struct device to cache the
      of_match_table entry discovered at driver match time.  This was unsafe
      because matching is not an atomic operation with probing a driver.  If
      two or more drivers are attempted to be matched to a driver at the
      same time, then the cached matching entry pointer could get
      overwritten.
      
      This patch reverts the of_match cache pointer and reworks all users to
      call of_match_device() directly instead.
      Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
      b1608d69
  7. 01 3月, 2011 1 次提交
  8. 30 9月, 2010 1 次提交
    • G
      of/i2c: Fix module load order issue caused by of_i2c.c · 925bb9c6
      Grant Likely 提交于
      Commit 959e85f7, "i2c: add OF-style registration and binding" caused a
      module dependency loop where of_i2c.c calls functions in i2c-core, and
      i2c-core calls of_i2c_register_devices() in of_i2c.  This means that
      when i2c support is built as a module when CONFIG_OF is set, then
      neither i2c_core nor of_i2c are able to be loaded.
      
      This patch fixes the problem by moving the of_i2c_register_devices()
      calls back into the device drivers.  Device drivers already
      specifically request the core code to parse the device tree for
      devices anyway by setting the of_node pointer, so it isn't a big
      deal to also call the registration function.  The drivers just become
      slightly more verbose.
      Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      925bb9c6
  9. 06 8月, 2010 1 次提交
  10. 02 8月, 2010 1 次提交
    • A
      powerpc/5200/i2c: improve i2c bus error recovery · 0c2daaaf
      Albrecht Dreß 提交于
      This patch improves the recovery of the MPC's I2C bus from errors like bus
      hangs resulting in timeouts:
      1. make the bus timeout configurable, as it depends on the bus clock and
          the attached slave chip(s); default is still 1 second;
      2. detect any of the cases indicated by the CF, BB and RXAK MSR flags if a
          timeout occurs, and add a missing (required) MAL reset;
      3. use a more reliable method to fixup the bus if a hang has been detected.
          The sequence is sent 9 times which seems to be necessary if a slave
          "misses" more than one clock cycle.  For 400 kHz bus speed, the fixup is
          also ~70us (81us vs. 150us) faster.
      
      Tested on a custom Lite5200b derived board, with a Dallas RTC, AD sensors
      and NXP IO expander chips attached to the i2c.
      
      Changes vs. v1:
      - use improved bus fixup sequence for all chips (not only the 5200)
      - calculate real clock from defaults if no clock is given in the device tree
      - better description (I hope) of the changes.
      
      I didn't split the changes in this file into three parts as recommended by
      Grant, as they actually belong together (i.e. they address one single
      problem, just in three places of one single source file).
      Signed-off-by: NAlbrecht Dreß <albrecht.dress@arcor.de>
      [grant.likely@secretlab.ca: fixup for ->node to ->dev.of_node transition]
      Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
      0c2daaaf
  11. 06 7月, 2010 2 次提交
  12. 22 5月, 2010 1 次提交
    • G
      of: Remove duplicate fields from of_platform_driver · 4018294b
      Grant Likely 提交于
      .name, .match_table and .owner are duplicated in both of_platform_driver
      and device_driver.  This patch is a removes the extra copies from struct
      of_platform_driver and converts all users to the device_driver members.
      
      This patch is a pretty mechanical change.  The usage model doesn't change
      and if any drivers have been missed, or if anything has been fixed up
      incorrectly, then it will fail with a compile time error, and the fixup
      will be trivial.  This patch looks big and scary because it touches so
      many files, but it should be pretty safe.
      Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
      Acked-by: NSean MacLennan <smaclennan@pikatech.com>
      4018294b
  13. 20 5月, 2010 1 次提交
  14. 19 5月, 2010 1 次提交
  15. 06 5月, 2010 1 次提交
  16. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      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: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  17. 08 3月, 2010 3 次提交
  18. 03 11月, 2009 1 次提交
  19. 17 6月, 2009 1 次提交
  20. 12 5月, 2009 1 次提交
  21. 07 4月, 2009 3 次提交
  22. 29 3月, 2009 1 次提交
  23. 09 3月, 2009 1 次提交
  24. 27 1月, 2009 1 次提交
  25. 09 10月, 2008 1 次提交
  26. 15 7月, 2008 1 次提交
    • J
      i2c: Let bus drivers add SPD to their class · 3401b2ff
      Jean Delvare 提交于
      Let general purpose I2C/SMBus bus drivers add SPD to their class. Once
      this is done, we will be able to tell the eeprom driver to only probe
      for SPD EEPROMs and similar on these buses.
      
      Note that I took a conservative approach here, adding I2C_CLASS_SPD to
      many drivers that have no idea whether they can host SPD EEPROMs or not.
      This is to make sure that the eeprom driver doesn't stop probing buses
      where SPD EEPROMs or equivalent live.
      
      So, bus driver maintainers and users should feel free to remove the SPD
      class from drivers those buses never have SPD EEPROMs or they don't
      want the eeprom driver to bind to them. Likewise, feel free to add the
      SPD class to any bus driver I might have missed.
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      3401b2ff
  27. 13 7月, 2008 1 次提交
  28. 12 5月, 2008 1 次提交
  29. 23 4月, 2008 1 次提交
  30. 28 1月, 2008 2 次提交
  31. 15 8月, 2007 2 次提交
  32. 12 7月, 2007 1 次提交