From ee48cef6c3917092eeee230caaa508d0e487c288 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 31 May 2019 17:15:38 +0300 Subject: [PATCH] ACPI / property: Don't limit named child node matching to data nodes 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 Tested-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/property.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 9d460a859be0..39c64291098f 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -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; }