mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
ACPICA: Permanently set _REV to the value '2'.
ACPICA commit 7af00219681ab35ebe57d64a9189fd04a5a026d8 Windows uses a value of 2, and has no plans to ever change this. So, _REV is essentially useless for its primary purpose. Worse, some BIOS vendors have used the difference in _REV values between Windows and ACPICA to indicate which one is running. It has been decided by the ACPI community to deprecate this method, and return 1 for ACPI 1.0 (32-bit integers) and 2 for ACPI 2.0 and greater (both 32-bit and 64-bit integers. ACPICA is changed to reflect this. Link: https://github.com/acpica/acpica/commit/7af00219 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>
This commit is contained in:
parent
796888e942
commit
b1ef297258
1 changed files with 10 additions and 3 deletions
|
@ -102,12 +102,19 @@ const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
|
|||
{"_SB_", ACPI_TYPE_DEVICE, NULL},
|
||||
{"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
|
||||
{"_TZ_", ACPI_TYPE_DEVICE, NULL},
|
||||
{"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
|
||||
/*
|
||||
* March, 2015:
|
||||
* The _REV object is in the process of being deprecated, because
|
||||
* other ACPI implementations permanently return 2. Thus, it
|
||||
* has little or no value. Return 2 for compatibility with
|
||||
* other ACPI implementations.
|
||||
*/
|
||||
{"_REV", ACPI_TYPE_INTEGER, ACPI_CAST_PTR(char, 2)},
|
||||
{"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
|
||||
{"_GL_", ACPI_TYPE_MUTEX, (char *)1},
|
||||
{"_GL_", ACPI_TYPE_MUTEX, ACPI_CAST_PTR(char, 1)},
|
||||
|
||||
#if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
|
||||
{"_OSI", ACPI_TYPE_METHOD, (char *)1},
|
||||
{"_OSI", ACPI_TYPE_METHOD, ACPI_CAST_PTR(char, 1)},
|
||||
#endif
|
||||
|
||||
/* Table terminator */
|
||||
|
|
Loading…
Reference in a new issue