diff options
Diffstat (limited to 'drivers/acpi/property.c')
| -rw-r--r-- | drivers/acpi/property.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 9d460a859be0..ea3d700da3ca 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ACPI device specific properties support. * @@ -7,10 +8,6 @@ * Authors: Mika Westerberg <mika.westerberg@linux.intel.com> * Darren Hart <dvhart@linux.intel.com> * Rafael J. Wysocki <rafael.j.wysocki@intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/acpi.h> @@ -603,15 +600,29 @@ 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; } |