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ACPICA: Add alias node support in namespace handling

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- Mark nodes as alias in ld_namespace2_begin() function.
 - Skip teardown for alias nodes in acpi_ns_detach_object() function.
 - Define ANOBJ_IS_ALIAS flag in aclocal.h.

Link: https://github.com/acpica/acpica/commit/cfcc46c4f717
Signed-off-by: ikaros <void0red@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/14020896.uLZWGnKmhe@rafael.j.wysocki
This commit is contained in:
ikaros 2026-05-27 19:53:58 +02:00 committed by Rafael J. Wysocki
parent 8de27e2d83
commit 8d79873403
2 changed files with 7 additions and 0 deletions
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1
drivers/acpi/acpica/aclocal.h
View File

@ -169,6 +169,7 @@ struct acpi_namespace_node {
#define ANOBJ_IS_EXTERNAL 0x08 /* iASL only: This object created via External() */
#define ANOBJ_METHOD_NO_RETVAL 0x10 /* iASL only: Method has no return value */
#define ANOBJ_METHOD_SOME_NO_RETVAL 0x20 /* iASL only: Method has at least one return value */
#define ANOBJ_IS_ALIAS 0x40 /* iASL only: Node is an alias to another node */
#define ANOBJ_IS_REFERENCED 0x80 /* iASL only: Object was referenced */
/* Internal ACPI table management - master table list */

6
drivers/acpi/acpica/nsobject.c
View File

@ -173,6 +173,12 @@ void acpi_ns_detach_object(struct acpi_namespace_node *node)
obj_desc = node->object;
/* Alias nodes point directly to other namespace nodes; skip teardown */
if (node->flags & ANOBJ_IS_ALIAS) {
node->object = NULL;
return_VOID;
}
if (!obj_desc || (obj_desc->common.type == ACPI_TYPE_LOCAL_DATA)) {
return_VOID;
}