ACPICA: Add comment explaining _SUB removal (c6c6069c) · Commits · 戴 / test

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>

drivers/acpi/acpica/nsxfname.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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

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