linux-kernel - [PATCH] drm/i2c: tda9950: Make use of the helper function devm_add_action_or

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Date:   Wed, 22 Sep 2021 20:59:16 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm/i2c: tda9950: Make use of the helper function devm_add_action_or_reset()

The helper function devm_add_action_or_reset() will internally
call devm_add_action(), and if devm_add_action() fails then it will
execute the action mentioned and return the error code. So
use devm_add_action_or_reset() instead of devm_add_action()
to simplify the error handling, reduce the code.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/gpu/drm/i2c/tda9950.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
index 5b03fdd1eaa4..922e431d3eb0 100644
--- a/drivers/gpu/drm/i2c/tda9950.c
+++ b/drivers/gpu/drm/i2c/tda9950.c
@@ -361,9 +361,7 @@ static int tda9950_devm_glue_init(struct device *dev, struct tda9950_glue *glue)
 			return ret;
 	}
 
-	ret = devm_add_action(dev, tda9950_devm_glue_exit, glue);
-	if (ret)
-		tda9950_devm_glue_exit(glue);
+	ret = devm_add_action_or_reset(dev, tda9950_devm_glue_exit, glue);
 
 	return ret;
 }
@@ -426,11 +424,9 @@ static int tda9950_probe(struct i2c_client *client,
 	if (IS_ERR(priv->adap))
 		return PTR_ERR(priv->adap);
 
-	ret = devm_add_action(dev, tda9950_cec_del, priv);
-	if (ret) {
-		cec_delete_adapter(priv->adap);
+	ret = devm_add_action_or_reset(dev, tda9950_cec_del, priv);
+	if (ret)
 		return ret;
-	}
 
 	ret = tda9950_devm_glue_init(dev, glue);
 	if (ret)
-- 
2.25.1