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ACPICA: Clear all non-wakeup GPEs in acpi_hw_enable_wakeup_gpe_block() 

Since acpi_hw_enable_wakeup_gpe_block() is currently always called
after disabling all GPEs, it can actually write zeros to all
non-wakeup enable bits unconditionally.

That will be useful going forward for disabling runtime GPEs and
enabling wakeup GPEs in one go instead of doing that in two steps
(disable runtime and enable wakeup) which in theory may lead to a
loss of a wakeup event.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki 2014-09-30 02:24:38 +02:00
parent 2670e02a2d
commit 5a0b8deeeb
1 changed files with 4 additions and 4 deletions
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8
drivers/acpi/acpica/hwgpe.c
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@ -396,11 +396,11 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
if (!gpe_block->register_info[i].enable_for_wake) {
continue;
}
/* Enable all "wake" GPEs in this register */
/*
* Enable all "wake" GPEs in this register and disable the
* remaining ones.
*/
status =
acpi_hw_write(gpe_block->register_info[i].enable_for_wake,