linux-kernel - [PATCH v2 8/8] imx-drm: use for_each_endpoint_of_node macro in imx_drm_encoder_parse

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Date:	Wed, 10 Sep 2014 12:58:28 +0200
From:	Philipp Zabel <p.zabel@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
	Grant Likely <grant.likely@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	kernel@...gutronix.de, Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH v2 8/8] imx-drm: use for_each_endpoint_of_node macro in imx_drm_encoder_parse_of

Using the for_each_... macro should make the code bit shorter and
easier to read.

Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
---
 drivers/staging/imx-drm/imx-drm-core.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index 9b5222c..460d785 100644
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c
@@ -438,17 +438,13 @@ int imx_drm_encoder_parse_of(struct drm_device *drm,
 	struct drm_encoder *encoder, struct device_node *np)
 {
 	struct imx_drm_device *imxdrm = drm->dev_private;
-	struct device_node *ep = NULL;
+	struct device_node *ep;
 	uint32_t crtc_mask = 0;
-	int i;
+	int i = 0;
 
-	for (i = 0; ; i++) {
+	for_each_endpoint_of_node(np, ep) {
 		u32 mask;
 
-		ep = of_graph_get_next_endpoint(np, ep);
-		if (!ep)
-			break;
-
 		mask = imx_drm_find_crtc_mask(imxdrm, ep);
 
 		/*
@@ -457,14 +453,15 @@ int imx_drm_encoder_parse_of(struct drm_device *drm,
 		 * not been registered yet.  Defer probing, and hope that
 		 * the required CRTC is added later.
 		 */
-		if (mask == 0)
+		if (mask == 0) {
+			of_node_put(ep);
 			return -EPROBE_DEFER;
+		}
 
 		crtc_mask |= mask;
+		i++;
 	}
 
-	if (ep)
-		of_node_put(ep);
 	if (i == 0)
 		return -ENOENT;
 
-- 
2.1.0

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