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ACPICA: Update return value for intenal _OSI method

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ACPICA commit 82101009c7c04845edb3495e66a274a613758bca

Instead of 0xFFFFFFFF, _OSI is now defined to return "Ones".
This is for compatibility with Windows. The ACPI spec will
be updated to reflect this.

Link: https://github.com/acpica/acpica/commit/82101009
Reported-by: Daniel Drake <drake@endlessm.com>
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:
Bob Moore 2016-09-07 14:06:47 +08:00 committed by Rafael J. Wysocki
parent 4e0b26d391
commit 955f485dc4
1 changed files with 17 additions and 5 deletions
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22
drivers/acpi/acpica/utosi.c
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@ -390,11 +390,22 @@ struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name)
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
* Integer: TRUE (0) if input string is matched
* FALSE (-1) if string is not matched
*
* DESCRIPTION: Implementation of the _OSI predefined control method. When
* an invocation of _OSI is encountered in the system AML,
* control is transferred to this function.
*
* (August 2016)
* Note: _OSI is now defined to return "Ones" to indicate a match, for
* compatibility with other ACPI implementations. On a 32-bit DSDT, Ones
* is 0xFFFFFFFF. On a 64-bit DSDT, Ones is 0xFFFFFFFFFFFFFFFF
* (ACPI_UINT64_MAX).
*
* This function always returns ACPI_UINT64_MAX for TRUE, and later code
* will truncate this to 32 bits if necessary.
*
******************************************************************************/
acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
@ -404,7 +415,7 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
struct acpi_interface_info *interface_info;
acpi_interface_handler interface_handler;
acpi_status status;
u32 return_value;
u64 return_value;
ACPI_FUNCTION_TRACE(ut_osi_implementation);
@ -444,7 +455,7 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
acpi_gbl_osi_data = interface_info->value;
}
return_value = ACPI_UINT32_MAX;
return_value = ACPI_UINT64_MAX;
}
acpi_os_release_mutex(acpi_gbl_osi_mutex);
@ -456,9 +467,10 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
*/
interface_handler = acpi_gbl_interface_handler;
if (interface_handler) {
return_value =
interface_handler(string_desc->string.pointer,
return_value);
if (interface_handler
(string_desc->string.pointer, (u32)return_value)) {
return_value = ACPI_UINT64_MAX;
}
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO,