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ACPICA: always disable GPE when requested

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acpi_ev_disable_gpe() has an optimization where it doesn't disable
a GPE that it "doesn't have to".  Unfortunately, it can get tricked
by AML that scribbles on register state behind its back.  So when asked
to disable a GPE, simply do it -- a redundant register write
in the common case is a fair price to pay to be bomb-proof
for the rare cases.

http://bugzilla.kernel.org/show_bug.cgi?id=6217

Signed-off-by: Damián Viano <[email protected]>
Acked-by: Zhang Rui <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Damián Viano 2008-04-29 03:32:25 -04:00 • committed by Len Brown
commit 51ae796f7f
1 changed files with 0 additions and 4 deletions
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4
drivers/acpi/events/evgpe.c
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@ -248,10 +248,6 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
ACPI_FUNCTION_TRACE(ev_disable_gpe);
if (!(gpe_event_info->flags & ACPI_GPE_ENABLE_MASK)) {
return_ACPI_STATUS(AE_OK);
}
/* Make sure HW enable masks are updated */
status =