From: Bob Moore <robert.moore@xxxxxxxxx>
Implemented another change to eliminate/suppress spurious or
stray GPEs. The AcpiEvDisableGpe function will now disable GPEs
that are neither enabled nor disabled -- meaning that the GPE is
unknown to the system. This will prevent future interrupts from
that GPE. (Zhang Rui) BZ 6217
Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/events/evgpe.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index 897baed..6940f5d 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -250,7 +250,14 @@ 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)) {
+ /*
+ * Ignore this if the GPE is valid and not enabled.
+ *
+ * Flags is only zero if GPE is neither enabled or disabled -- it may
+ * be a spurious or stray GPE -- disable it in the default case below.
+ */
+ if (gpe_event_info->flags &&
+ (!(gpe_event_info->flags & ACPI_GPE_ENABLE_MASK))) {
return_ACPI_STATUS(AE_OK);
}
--
1.5.5.29.g7134
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