From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
The correct scope for looking up the objects to generate data packages for
data-only subnodes pointed to by another data-only subnode is the scope
of the parent of that subnode and not the scope containing the _DSD object
at the top of the hierarchy (the latter works only if all of the objects
returning data-only subnode packages in a given hierarchy are in the same
scope).
Fix the code to work as expected.
Fixes: 445b0eb058f5 (ACPI / property: Add support for data-only subnodes)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
On top of linux-next.
Thanks,
Rafael
---
drivers/acpi/property.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
Index: linux-pm/drivers/acpi/property.c
===================================================================
--- linux-pm.orig/drivers/acpi/property.c
+++ linux-pm/drivers/acpi/property.c
@@ -71,7 +71,14 @@ static bool acpi_nondev_subnode_ok(acpi_
if (acpi_extract_properties(buf.pointer, &dn->data))
dn->handle = handle;
- if (acpi_enumerate_nondev_subnodes(scope, buf.pointer, &dn->data))
+ /*
+ * The scope for the subnode object lookup is the one of the namespace
+ * node (device) containing the object that has returned the package.
+ * That is, it's the scope of that object's parent.
+ */
+ status = acpi_get_parent(handle, &scope);
+ if (ACPI_SUCCESS(status)
+ && acpi_enumerate_nondev_subnodes(scope, buf.pointer, &dn->data))
dn->handle = handle;
if (dn->handle) {
--
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