Using of_graph_parse_endpoint recovers the port id from an endpoint device tree node. This just replaces an open coded read of the "reg" property.
Signed-off-by: Philipp Zabel p.zabel@pengutronix.de --- drivers/staging/imx-drm/imx-drm-core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c index 01bc1cf..009805a 100644 --- a/drivers/staging/imx-drm/imx-drm-core.c +++ b/drivers/staging/imx-drm/imx-drm-core.c @@ -501,8 +501,9 @@ int imx_drm_encoder_get_mux_id(struct device_node *node, { struct imx_drm_crtc *imx_crtc = imx_drm_find_crtc(encoder->crtc); struct device_node *ep = NULL; + struct of_endpoint endpoint; struct device_node *port; - int id, ret; + int ret;
if (!node || !imx_crtc) return -EINVAL; @@ -515,9 +516,8 @@ int imx_drm_encoder_get_mux_id(struct device_node *node, port = of_graph_get_remote_port(ep); of_node_put(port); if (port == imx_crtc->port) { - ret = of_property_read_u32(ep->parent, "reg", &id); - of_node_put(ep); - return ret ? ret : id; + ret = of_graph_parse_endpoint(ep, &endpoint); + return ret ? ret : endpoint.id; } } while (ep);