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authorRafael J. Wysocki <rjw@sisk.pl>2010-09-16 00:30:43 +0200
committerLen Brown <len.brown@intel.com>2010-09-24 16:55:47 -0400
commita210080195c95ebca2a517ee3057d71607aa65e0 (patch)
tree96aa2aee4b9bdbc747b7a0d7150d0b41650ebe90 /drivers/acpi/acpica/utxface.c
parent2422084a94fcd5038406261b331672a13c92c050 (diff)
downloadop-kernel-dev-a210080195c95ebca2a517ee3057d71607aa65e0.zip
op-kernel-dev-a210080195c95ebca2a517ee3057d71607aa65e0.tar.gz
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>
Diffstat (limited to 'drivers/acpi/acpica/utxface.c')
-rw-r--r--drivers/acpi/acpica/utxface.c13
1 files changed, 0 insertions, 13 deletions
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index 7f8cefc..16cc48c 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -290,19 +290,6 @@ acpi_status acpi_initialize_objects(u32 flags)
}
/*
- * Complete the GPE initialization for the GPE blocks defined in the FADT
- * (GPE block 0 and 1).
- *
- * NOTE: Currently, there seems to be no need to run the _REG methods
- * before enabling the GPEs.
- */
- if (!(flags & ACPI_NO_EVENT_INIT)) {
- status = acpi_ev_install_fadt_gpes();
- if (ACPI_FAILURE(status))
- return (status);
- }
-
- /*
* Empty the caches (delete the cached objects) on the assumption that
* the table load filled them up more than they will be at runtime --
* thus wasting non-paged memory.
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