1. 07 10月, 2012 2 次提交
  2. 30 3月, 2012 1 次提交
  3. 21 3月, 2012 1 次提交
  4. 29 5月, 2011 2 次提交
  5. 26 4月, 2011 1 次提交
  6. 01 4月, 2011 1 次提交
  7. 12 1月, 2011 2 次提交
  8. 10 12月, 2010 1 次提交
  9. 22 10月, 2010 1 次提交
    • T
      ACPI: Make Embedded Controller command timeout delay configurable · 7a18e96d
      Thomas Renninger 提交于
      Here and then there show up machines which need higher timeout values.
      Finding this on affected machines can be cumbersome, because
      ACPI_EC_DELAY is a compile option -> make it configurable via boot param.
      
      This can even be provided writable at runtime via:
      /sys/modules/acpi/parameters/ec_delay
      
      Known machines where this helps:
      Some HP machines where for whatever reasons specific EC accesses take
      very long at resume from S3 (in _WAK function).
      The AE_TIME error is passed upwards and the ACPI interpreter will
      not execute the rest of the _WAK function which results in not properly
      initialized devices/variables with different side-effects.
      
      Afaik, on some MSI machines this helped as well.
      
      If this param is needed there probably are underlying problems like:
        - EC firmware bug
        - A kernel EC driver bug
        - An ACPI interpreter behavior (e.g. timings when specific
          EC accesses happen and how) which the EC does not like
        - ...
      which should get evaluated further, but often are nasty or
      impossible to fix from OS side.
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      7a18e96d
  10. 03 8月, 2010 4 次提交
    • T
      acpi ec: Fix possible double io port registration · de4f1046
      Thomas Renninger 提交于
      which will result in a harmless but ugly WARN message on
      some machines.
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      CC: mjg59@srcf.ucam.org
      CC: platform-driver-x86@vger.kernel.org
      CC: linux-acpi@vger.kernel.org
      CC: astarikovskiy@suse.de
      CC: akpm@linux-foundation.org
      Signed-off-by: NMatthew Garrett <mjg@redhat.com>
      de4f1046
    • T
      ACPI: Register EC io ports in /proc/ioports · b52e0421
      Thomas Renninger 提交于
      Formerly these have been exposed through /proc/..
      Better register them where all IO ports should get registered
      and scream loud if someone else claims to use them.
      
      EC data and command port typically should show up like this
      then:
      ...
        0060-0060 : keyboard
        0062-0062 : EC data
        0064-0064 : keyboard
        0066-0066 : EC command
        0070-0071 : rtc0
      ...
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      
      CC: Alexey Starikovskiy <astarikovskiy@suse.de>
      CC: Len Brown <lenb@kernel.org>
      CC: linux-kernel@vger.kernel.org
      CC: linux-acpi@vger.kernel.org
      CC: Bjorn Helgaas <bjorn.helgaas@hp.com>
      CC: platform-driver-x86@vger.kernel.org
      Signed-off-by: NMatthew Garrett <mjg@redhat.com>
      b52e0421
    • T
      ACPI: Provide /sys/kernel/debug/ec/... · 1195a098
      Thomas Renninger 提交于
      This patch provides the same information through debugfs, which previously was
      provided through /proc/acpi/embedded_controller/*/info
      
      This is the gpe the EC is connected to and whether the global lock
      gets used.
      The io ports used are added to /proc/ioports in another patch.
      Beside the fact that /proc/acpi is deprecated for quite some time,
      this info is not needed for applications and thus can be moved
      to debugfs instead of a public interface like /sys.
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      
      CC: Alexey Starikovskiy <astarikovskiy@suse.de>
      CC: Len Brown <lenb@kernel.org>
      CC: linux-kernel@vger.kernel.org
      CC: linux-acpi@vger.kernel.org
      CC: Bjorn Helgaas <bjorn.helgaas@hp.com>
      CC: platform-driver-x86@vger.kernel.org
      Signed-off-by: NMatthew Garrett <mjg@redhat.com>
      1195a098
    • T
      ACPI: Remove /proc/acpi/embedded_controller/.. · 49c6c5ff
      Thomas Renninger 提交于
      Other patches in this series add the same info to /sys/... and
      /proc/ioports.
      
      The info removed should never have been used in an application,
      eventually someone read it manually.
      /proc/acpi is deprecated for more than a year anyway...
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      
      CC: Alexey Starikovskiy <astarikovskiy@suse.de>
      CC: Len Brown <lenb@kernel.org>
      CC: linux-kernel@vger.kernel.org
      CC: linux-acpi@vger.kernel.org
      CC: platform-driver-x86@vger.kernel.org
      Signed-off-by: NMatthew Garrett <mjg@redhat.com>
      49c6c5ff
  11. 07 7月, 2010 3 次提交
  12. 29 5月, 2010 2 次提交
    • R
      ACPI / EC / PM: Fix names of functions that block/unblock EC transactions · fe955682
      Rafael J. Wysocki 提交于
      The names of the functions used for blocking/unblocking EC
      transactions during suspend/hibernation suggest that the transactions
      are suspended and resumed by them, while in fact they are disabled
      and enabled.  Rename the functions (and the flag used by them) to
      better reflect what they really do.
      Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      fe955682
    • R
      ACPI / EC / PM: Fix race between EC transactions and system suspend · d5a64513
      Rafael J. Wysocki 提交于
      There still is a race that may result in suspending the system in
      the middle of an EC transaction in progress, which leads to problems
      (like the kernel thinking that the ACPI global lock is held during
      resume while in fact it's not).
      
      To remove the race condition, modify the ACPI platform suspend and
      hibernate callbacks so that EC transactions are blocked right after
      executing the _PTS global control method and are allowed to happen
      again right after the low-level wakeup.
      
      Introduce acpi_pm_freeze() that will disable GPEs, wait until the
      event queues are empty and block EC transactions.  Use it wherever
      GPEs are disabled in preparation for switching local interrupts off.
      Introduce acpi_pm_thaw() that will allow EC transactions to happen
      again and enable runtime GPEs.  Use it to balance acpi_pm_freeze()
      wherever necessary.
      
      In addition to that use acpi_ec_resume_transactions_early() to
      unblock EC transactions as early as reasonably possible during
      resume.  Also unblock EC transactions in acpi_hibernation_finish()
      and in the analogous suspend routine to make sure that the EC
      transactions are enabled in all error paths.
      
      Fixes https://bugzilla.kernel.org/show_bug.cgi?id=14668Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      Reported-and-tested-by: NMaxim Levitsky <maximlevitsky@gmail.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      d5a64513
  13. 20 5月, 2010 1 次提交
  14. 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
  15. 18 3月, 2010 1 次提交
  16. 09 3月, 2010 1 次提交
  17. 25 2月, 2010 1 次提交
    • R
      ACPI: Use GPE reference counting to support shared GPEs · cbbc0de7
      Rafael J. Wysocki 提交于
      To fix a bug and address the reviewers' comments regarding the ACPI
      GPE refcounting patch, do the following additional changes:
      
      o Remove the second argument of acpi_ev_enable_gpe(),
        'write_to_hardware', because it is not necessary any more.
      
      o Add the "bad parameter" test against 'type' in
        acpi_enable_gpe() and acpi_disable_gpe().
      
      o Make acpi_enable_gpe() only check 'status' for runtime GPEs if
        acpi_ev_enable_gpe() was actually called.
      
      o Make acpi_disable_gpe() return 'status' returned by
        acpi_ev_disable_gpe() and fix a bug where ACPI_GPE_TYPE_WAKE
        and ACPI_GPE_TYPE_RUNTIME were exchanged by mistake.
      
      o Add comments explaining why acpi_set_gpe() is used by the ACPI EC
        driver.
      Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      cbbc0de7
  18. 23 2月, 2010 1 次提交
    • R
      ACPI: Use GPE reference counting to support shared GPEs · 9630bdd9
      Rafael J. Wysocki 提交于
      ACPI GPEs may map to multiple devices.  The current GPE interface
      only provides a mechanism for enabling and disabling GPEs, making
      it difficult to change the state of GPEs at runtime without extensive
      cooperation between devices.
      
      Add an API to allow devices to indicate whether or not they want
      their device's GPE to be enabled for both runtime and wakeup events.
      
      Remove the old GPE type handling entirely, which gets rid of various
      quirks, like the implicit disabling with GPE type setting. This
      requires a small amount of rework in order to ensure that non-wake
      GPEs are enabled by default to preserve existing behaviour.
      
      Based on patches from Matthew Garrett <mjg@redhat.com>.
      Signed-off-by: NMatthew Garrett <mjg@redhat.com>
      Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      9630bdd9
  19. 28 1月, 2010 1 次提交
  20. 16 1月, 2010 2 次提交
  21. 25 12月, 2009 1 次提交
  22. 22 12月, 2009 1 次提交
  23. 25 11月, 2009 1 次提交
  24. 03 10月, 2009 2 次提交
  25. 02 10月, 2009 1 次提交
  26. 19 9月, 2009 1 次提交
  27. 30 8月, 2009 3 次提交