diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/base.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index b169508a9b56..4c305599a664 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -2501,6 +2501,27 @@ struct device_node *of_graph_get_remote_endpoint(const struct device_node *node) EXPORT_SYMBOL(of_graph_get_remote_endpoint); /** + * of_graph_get_port_parent() - get port's parent node + * @node: pointer to a local endpoint device_node + * + * Return: device node associated with endpoint node linked + * to @node. Use of_node_put() on it when done. + */ +struct device_node *of_graph_get_port_parent(struct device_node *node) +{ + unsigned int depth; + + /* Walk 3 levels up only if there is 'ports' node. */ + for (depth = 3; depth && node; depth--) { + node = of_get_next_parent(node); + if (depth == 2 && of_node_cmp(node->name, "ports")) + break; + } + return node; +} +EXPORT_SYMBOL(of_graph_get_port_parent); + +/** * of_graph_get_remote_port_parent() - get remote port's parent node * @node: pointer to a local endpoint device_node * @@ -2511,18 +2532,11 @@ struct device_node *of_graph_get_remote_port_parent( const struct device_node *node) { struct device_node *np; - unsigned int depth; /* Get remote endpoint node. */ np = of_graph_get_remote_endpoint(node); - /* Walk 3 levels up only if there is 'ports' node. */ - for (depth = 3; depth && np; depth--) { - np = of_get_next_parent(np); - if (depth == 2 && of_node_cmp(np->name, "ports")) - break; - } - return np; + return of_graph_get_port_parent(np); } EXPORT_SYMBOL(of_graph_get_remote_port_parent); |