diff options
| -rw-r--r-- | sys/contrib/dev/acpica/hwsleep.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/hwsleep.c b/sys/contrib/dev/acpica/hwsleep.c index 137a477..6066752 100644 --- a/sys/contrib/dev/acpica/hwsleep.c +++ b/sys/contrib/dev/acpica/hwsleep.c @@ -296,6 +296,7 @@ AcpiEnterSleepState ( ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; UINT32 InValue; + UINT32 Retry; ACPI_STATUS Status; @@ -422,6 +423,7 @@ AcpiEnterSleepState ( /* Wait until we enter sleep state */ + Retry = 1000; do { Status = AcpiGetRegister (ACPI_BITREG_WAKE_STATUS, &InValue, ACPI_MTX_DO_NOT_LOCK); @@ -430,6 +432,15 @@ AcpiEnterSleepState ( return_ACPI_STATUS (Status); } + /* + * Some BIOSs don't set WAK_STS at all. Give up waiting after + * 1000 retries if it still isn't set. + */ + if (Retry-- == 0) + { + break; + } + /* Spin until we wake */ } while (!InValue); |
