1. 07 8月, 2010 1 次提交
    • R
      ACPI / ACPICA: Fix reference counting problems with GPE handlers · 28f4f8a9
      Rafael J. Wysocki 提交于
      If a handler is installed for a GPE associated with an AML method and
      such that it cannot wake up the system from sleep states, the GPE
      remains enabled after the handler has been installed, although it
      should be disabled in that case to avoid spurious execution of the
      handler.
      
      Fix this issue by making acpi_install_gpe_handler() disable GPEs
      that were previously associated with AML methods and cannot wake up
      the system from sleep states.
      
      Analogously, make acpi_remove_gpe_handler() enable the GPEs that
      are associated with AML methods after their handlers have been
      removed and cannot wake up the system from sleep states.  In addition
      to that, fix a code ordering issue in acpi_remove_gpe_handler() that
      renders the locking ineffective (ACPI_MTX_EVENTS is released
      temporarily in the middle of the routine to wait for the completion
      of events already in progress).
      
      For this purpose introduce acpi_raw_disable_gpe() and
      acpi_raw_enable_gpe() to be called with acpi_gbl_gpe_lock held
      and rework acpi_disable_gpe() and acpi_enable_gpe(), respectively, to
      use them.  Also rework acpi_gpe_can_wake() to use
      acpi_raw_disable_gpe() instead of calling acpi_disable_gpe() after
      releasing the lock to avoid the possible theoretical race with
      acpi_install_gpe_handler().
      Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      Cc: "Moore, Robert" <robert.moore@intel.com>
      Cc: Lin Ming <ming.m.lin@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      28f4f8a9
  2. 07 7月, 2010 2 次提交
  3. 06 5月, 2010 2 次提交
  4. 20 4月, 2010 1 次提交
  5. 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
  6. 23 1月, 2010 4 次提交
  7. 09 9月, 2009 1 次提交
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  9. 27 5月, 2009 2 次提交
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  14. 31 12月, 2008 2 次提交
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  20. 10 5月, 2007 1 次提交
  21. 03 2月, 2007 7 次提交