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

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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 <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Rafael J. Wysocki 2010-09-16 00:30:43 +02:00 • committed by Len Brown
commit a210080195
13 changed files with 94 additions and 140 deletions
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2
include/acpi/acpixf.h
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@ -308,6 +308,8 @@ acpi_install_gpe_block(acpi_handle gpe_device,
acpi_status acpi_remove_gpe_block(acpi_handle gpe_device);
acpi_status acpi_update_gpes(void);
/*
* Resource interfaces
*/