ACPI / ACPICA: Defer enabling of runtime GPEs (v3)

The current ACPI GPEs initialization code has a problem that it
enables some GPEs pointed to by device _PRW methods, generally
intended for signaling wakeup events (system or device wakeup).
These GPEs are then almost immediately disabled by the ACPI namespace
scanning code with the help of acpi_gpe_can_wake(), but it would be
better not to enable them at all until really necessary.

Modify the initialization of GPEs so that the ones that have
associated _Lxx or _Exx methods and are not pointed to by any _PRW
methods will be enabled after the namespace scan is complete.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 0 insertions, 41 deletions

diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index 303618889da0..c61c3039c31a 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -95,47 +95,6 @@ acpi_status acpi_ev_initialize_events(void)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ev_install_fadt_gpes
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Completes initialization of the FADT-defined GPE blocks
- *              (0 and 1). The HW must be fully initialized at this point,
- *              including global lock support.
- *
- ******************************************************************************/
-
-acpi_status acpi_ev_install_fadt_gpes(void)
-{
-        acpi_status status;
-
-        ACPI_FUNCTION_TRACE(ev_install_fadt_gpes);
-
-        /* Namespace must be locked */
-
-        status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
-        if (ACPI_FAILURE(status)) {
-                return (status);
-        }
-
-        /* FADT GPE Block 0 */
-
-        (void)acpi_ev_initialize_gpe_block(acpi_gbl_fadt_gpe_device,
-                                           acpi_gbl_gpe_fadt_blocks[0]);
-
-        /* FADT GPE Block 1 */
-
-        (void)acpi_ev_initialize_gpe_block(acpi_gbl_fadt_gpe_device,
-                                           acpi_gbl_gpe_fadt_blocks[1]);
-
-        (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-        return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_ev_install_xrupt_handlers
  *
  * PARAMETERS:  None