diff options
| author | Bob Moore <robert.moore@intel.com> | 2013-03-08 13:22:14 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-03-12 03:45:04 +0400 |
| commit | c39660b232c5e4aee3cded5a02d28e71ca447fb8 (patch) | |
| tree | 6b7cee9e3520270c28eb1d347eb127d0130ed303 /drivers/acpi/acpica/evxfevnt.c | |
| parent | f1778eb1ab3e3ef90826b6b6b0ad7fbafa46308b (diff) | |
| download | linux-c39660b232c5e4aee3cded5a02d28e71ca447fb8.tar.xz | |
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/evxfevnt.c')
| -rw-r--r-- | drivers/acpi/acpica/evxfevnt.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c index d6e4e42316db..7039606a0ba8 100644 --- a/drivers/acpi/acpica/evxfevnt.c +++ b/drivers/acpi/acpica/evxfevnt.c @@ -74,6 +74,12 @@ acpi_status acpi_enable(void) return_ACPI_STATUS(AE_NO_ACPI_TABLES); } + /* If the Hardware Reduced flag is set, machine is always in acpi mode */ + + if (acpi_gbl_reduced_hardware) { + return_ACPI_STATUS(AE_OK); + } + /* Check current mode */ if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) { @@ -126,6 +132,12 @@ acpi_status acpi_disable(void) ACPI_FUNCTION_TRACE(acpi_disable); + /* If the Hardware Reduced flag is set, machine is always in acpi mode */ + + if (acpi_gbl_reduced_hardware) { + return_ACPI_STATUS(AE_OK); + } + if (acpi_hw_get_mode() == ACPI_SYS_MODE_LEGACY) { ACPI_DEBUG_PRINT((ACPI_DB_INIT, "System is already in legacy (non-ACPI) mode\n")); |