diff options
| author | Bob Moore <robert.moore@intel.com> | 2013-03-08 09:22:14 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-03-12 00:45:04 +0100 |
| commit | c39660b232c5e4aee3cded5a02d28e71ca447fb8 (patch) | |
| tree | 6b7cee9e3520270c28eb1d347eb127d0130ed303 /drivers/acpi/acpica/hwacpi.c | |
| parent | f1778eb1ab3e3ef90826b6b6b0ad7fbafa46308b (diff) | |
ACPICA: Update for ACPI 5 hardware-reduced feature
Ensure that AcpiEnable and AcpiDisable work properly when the
hardware-reduced flag is set in the FADT.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/hwacpi.c')
| -rw-r--r-- | drivers/acpi/acpica/hwacpi.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c index deb3f61e2bd..9b02a9f5b04 100644 --- a/drivers/acpi/acpica/hwacpi.c +++ b/drivers/acpi/acpica/hwacpi.c @@ -66,6 +66,12 @@ acpi_status acpi_hw_set_mode(u32 mode) ACPI_FUNCTION_TRACE(hw_set_mode); + /* If the Hardware Reduced flag is set, machine is always in acpi mode */ + + if (acpi_gbl_reduced_hardware) { + return_ACPI_STATUS(AE_OK); + } + /* * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, * system does not support mode transition. @@ -146,6 +152,12 @@ u32 acpi_hw_get_mode(void) ACPI_FUNCTION_TRACE(hw_get_mode); + /* If the Hardware Reduced flag is set, machine is always in acpi mode */ + + if (acpi_gbl_reduced_hardware) { + return_VALUE(ACPI_SYS_MODE_ACPI); + } + /* * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, * system does not support mode transition. |