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ACPI / property: Don't limit named child node matching to data nodes

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There is no reason why we should limit the use of
fwnode_get_named_child_node() to data nodes only.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Heikki Krogerus 2019-05-31 17:15:38 +03:00 committed by Rafael J. Wysocki
parent dad9bb0178
commit ee48cef6c3
1 changed files with 20 additions and 6 deletions
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26
drivers/acpi/property.c
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@ -603,15 +603,29 @@ static struct fwnode_handle *
acpi_fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
const char *childname)
{
char name[ACPI_PATH_SEGMENT_LENGTH];
struct fwnode_handle *child;
struct acpi_buffer path;
acpi_status status;
/*
* Find first matching named child node of this fwnode.
* For ACPI this will be a data only sub-node.
*/
fwnode_for_each_child_node(fwnode, child)
if (acpi_data_node_match(child, childname))
path.length = sizeof(name);
path.pointer = name;
fwnode_for_each_child_node(fwnode, child) {
if (is_acpi_data_node(child)) {
if (acpi_data_node_match(child, childname))
return child;
continue;
}
status = acpi_get_name(ACPI_HANDLE_FWNODE(child),
ACPI_SINGLE_NAME, &path);
if (ACPI_FAILURE(status))
break;
if (!strncmp(name, childname, ACPI_NAMESEG_SIZE))
return child;
}
return NULL;
}