linux-kernel - [PATCH 1/2] drm/rcar-du: Use common error handling code in rcar_du_encoders

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Date:   Tue, 24 Oct 2017 18:01:21 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        David Airlie <airlied@...ux.ie>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/2] drm/rcar-du: Use common error handling code in
 rcar_du_encoders_init()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 24 Oct 2017 17:16:09 +0200

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/gpu/drm/rcar-du/rcar_du_kms.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 566d1a948c8f..d2c80cc9f8ee 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -377,10 +377,8 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
 		int ret;
 
 		ret = of_graph_parse_endpoint(ep_node, &ep);
-		if (ret < 0) {
-			of_node_put(ep_node);
-			return ret;
-		}
+		if (ret < 0)
+			goto put_node;
 
 		/* Find the output route corresponding to the port number. */
 		for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) {
@@ -401,10 +399,8 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
 		/* Process the output pipeline. */
 		ret = rcar_du_encoders_init_one(rcdu, output, &ep);
 		if (ret < 0) {
-			if (ret == -EPROBE_DEFER) {
-				of_node_put(ep_node);
-				return ret;
-			}
+			if (ret == -EPROBE_DEFER)
+				goto put_node;
 
 			continue;
 		}
@@ -413,6 +409,10 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
 	}
 
 	return num_encoders;
+
+put_node:
+	of_node_put(ep_node);
+	return ret;
 }
 
 static int rcar_du_properties_init(struct rcar_du_device *rcdu)
-- 
2.14.3