leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ACPICA: Add comment explaining _SUB removal

Browse Source 
ACPICA commit 81a89968f83bfc3b1d0f0f80f2da08ea69646053

Adds a lengthy comment to acpi_get_object_info explaining the removal
of _SUB and why no complex methods can be added ever to this
interface.

Link: https://github.com/acpica/acpica/commit/81a89968
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 2015-12-29 13:56:14 +08:00 committed by Rafael J. Wysocki
parent 07cb390f43
commit c6c6069cad
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/acpi/acpica/nsxfname.c
View File

@ -267,6 +267,13 @@ static char *acpi_ns_copy_device_id(struct acpi_pnp_device_id *dest,
*
* Note: Allocates the return buffer, must be freed by the caller.
*
* Note: This interface is intended to be used during the initial device
* discovery namespace traversal. Therefore, no complex methods can be
* executed, especially those that access operation regions. Therefore, do
* not add any additional methods that could cause problems in this area.
* this was the fate of the _SUB method which was found to cause such
* problems and was removed (11/2015).
*
******************************************************************************/
acpi_status