This function is used to find fwnode endpoints against a device. In some instances those endpoints are software nodes which are children of fwnode->secondary. Add support to fwnode_graph_get_endpoint_by_id() to find those endpoints by recursively calling itself passing the ptr to fwnode->secondary in the event no endpoint is found for the primary. Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> Signed-off-by: Daniel Scally <djrscally@xxxxxxxxx> --- Changes in v4: - None drivers/base/property.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/base/property.c b/drivers/base/property.c index bc9c634df6df..ddba75d90af2 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1163,7 +1163,14 @@ fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode, best_ep_id = fwnode_ep.id; } - return best_ep; + if (best_ep) + return best_ep; + + if (fwnode && !IS_ERR_OR_NULL(fwnode->secondary)) + return fwnode_graph_get_endpoint_by_id(fwnode->secondary, port, + endpoint, flags); + + return NULL; } EXPORT_SYMBOL_GPL(fwnode_graph_get_endpoint_by_id); -- 2.25.1
