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-rw-r--r--sys/contrib/dev/acpica/hwsleep.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/contrib/dev/acpica/hwsleep.c b/sys/contrib/dev/acpica/hwsleep.c
index cc4aae2..494d37d 100644
--- a/sys/contrib/dev/acpica/hwsleep.c
+++ b/sys/contrib/dev/acpica/hwsleep.c
@@ -298,8 +298,10 @@ AcpiEnterSleepState (
/* wait a second, then try again */
AcpiOsStall(1000000);
- AcpiHwRegisterWrite(ACPI_MTX_LOCK, PM1_CONTROL,
- (1 << AcpiHwGetBitShift (SLP_EN_MASK)));
+ if (SleepState > ACPI_STATE_S1) {
+ AcpiHwRegisterWrite(ACPI_MTX_LOCK, PM1_CONTROL,
+ (1 << AcpiHwGetBitShift (SLP_EN_MASK)));
+ }
enable();
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