From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Wed, 5 Mar 2014 09:20:53 +0000 (+0100)
Subject: staging: imx-drm-core: use of_graph_parse_endpoint
X-Git-Tag: v3.15-rc1~139^2~586^2~9
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b6babdd93c1e679b49858d1ebe44144e93b744fb;p=users%2Fdwmw2%2Flinux.git

staging: imx-drm-core: use of_graph_parse_endpoint

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>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index e4277f996574f..f926931183ea6 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);