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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-10-20 18:32:27 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-10-22 00:54:03 +0200
commit205ad97fc5a6386214323641dd28b822cb6fc624 (patch)
treee16c2fce56e62fad04e2910d58608ee25a02bde3 /drivers/acpi/property.c
parent3f4232ee8b53cf2266d227af299aa511d2d91d11 (diff)
downloadlinux-sh-205ad97fc5a6386214323641dd28b822cb6fc624.tar.gz
ACPI / property: Fix subnode lookup scope for data-only subnodes
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@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/acpi/property.c')
-rw-r--r--drivers/acpi/property.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 14654435c295..88f4306744c0 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -71,7 +71,14 @@ static bool acpi_nondev_subnode_ok(acpi_handle scope,
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) {