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| author | Lv Zheng <lv.zheng@intel.com> | 2016-02-19 09:17:15 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-02-24 16:14:50 +0300 |
| commit | ced043663e4becc7b66860ebca6d307182c97dfb (patch) | |
| tree | 09073d0cec5650efc166ab6150f55e9b4b710f2c /drivers/acpi/acpica/utxfinit.c | |
| parent | 9559130b11f05ddc1db14cfc3fe6ac25a1417a03 (diff) | |
| download | linux-ced043663e4becc7b66860ebca6d307182c97dfb.tar.xz | |
ACPICA: Namespace: Ensure \_SB._INI executed before any _REG
ACPICA commit 8ae25b8d128b6b8509010be321ff6bf2760f3807
There is BIOS code relying on the fact that \_SB._INI should get evaluated
before any other control methods. This may implies a gap in ACPICA/Linux
initialization/enumeration process.
Before revealing Windows true behavior by more validations, this patch only
ensures \_SB._INI evaluated before any _REG control methods. This can help
to make progress to other initialization order fixes. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/8ae25b8d
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/utxfinit.c')
| -rw-r--r-- | drivers/acpi/acpica/utxfinit.c | 27 |
1 files changed, 4 insertions, 23 deletions
diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c index 94158301b6c1..66d6f19fd6ad 100644 --- a/drivers/acpi/acpica/utxfinit.c +++ b/drivers/acpi/acpica/utxfinit.c @@ -301,33 +301,14 @@ acpi_status __init acpi_initialize_objects(u32 flags) } } - /* - * Run all _REG methods - * - * Note: Any objects accessed by the _REG methods will be automatically - * initialized, even if they contain executable AML (see the call to - * acpi_ns_initialize_objects below). - */ acpi_gbl_reg_methods_enabled = TRUE; - if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "[Init] Executing _REG OpRegion methods\n")); - - status = acpi_ev_initialize_op_regions(); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } /* - * Initialize all device objects in the namespace. This runs the device - * _STA and _INI methods. + * Initialize all device/region objects in the namespace. This runs + * the device _STA and _INI methods and region _REG methods. */ - if (!(flags & ACPI_NO_DEVICE_INIT)) { - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "[Init] Initializing ACPI Devices\n")); - - status = acpi_ns_initialize_devices(); + if (!(flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) { + status = acpi_ns_initialize_devices(flags); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } |