1. 15 Aug, 2010 9 commits
  2. 08 Aug, 2010 3 commits
  3. 07 Aug, 2010 1 commit
    • Rafael J. Wysocki's avatar
      ACPI / ACPICA: Fix reference counting problems with GPE handlers · 28f4f8a9
      Rafael J. Wysocki authored
      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: default avatarRafael J. Wysocki <rjw@sisk.pl>
      Cc: "Moore, Robert" <robert.moore@intel.com>
      Cc: Lin Ming <ming.m.lin@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      28f4f8a9
  4. 01 Aug, 2010 2 commits
  5. 31 Jul, 2010 5 commits
  6. 30 Jul, 2010 8 commits
  7. 29 Jul, 2010 12 commits