linux-kernel - [PATCH RFC net-next v3 05/27] net: pse-pd: tps23881: Simplify function returns by removing redundant checks

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Message-Id: <20241121-feature_poe_port_prio-v3-5-83299fa6967c@bootlin.com>
Date: Thu, 21 Nov 2024 15:42:31 +0100
From: Kory Maincent <kory.maincent@...tlin.com>
To: Andrew Lunn <andrew@...n.ch>, Oleksij Rempel <o.rempel@...gutronix.de>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Jonathan Corbet <corbet@....net>, Donald Hunter <donald.hunter@...il.com>, 
 Rob Herring <robh@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>, 
 Simon Horman <horms@...nel.org>, Heiner Kallweit <hkallweit1@...il.com>, 
 Russell King <linux@...linux.org.uk>, Liam Girdwood <lgirdwood@...il.com>, 
 Mark Brown <broonie@...nel.org>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
 linux-doc@...r.kernel.org, Kyle Swenson <kyle.swenson@....tech>, 
 Dent Project <dentproject@...uxfoundation.org>, kernel@...gutronix.de, 
 Maxime Chevallier <maxime.chevallier@...tlin.com>, 
 Kory Maincent <kory.maincent@...tlin.com>
Subject: [PATCH RFC net-next v3 05/27] net: pse-pd: tps23881: Simplify
 function returns by removing redundant checks

From: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>

Cleaned up several functions in tps23881 by removing redundant checks on
return values at the end of functions. These check has been removed, and
the return statement now directly returns the function result, reducing
the code's complexity and making it more concise.

Reviewed-by: Andrew Lunn <andrew@...n.ch>
Acked-by: Oleksij Rempel <o.rempel@...gutronix.de>
Reviewed-by: Kyle Swenson <kyle.swenson@....tech>
Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---
 drivers/net/pse-pd/tps23881.c | 26 +++++---------------------
 1 file changed, 5 insertions(+), 21 deletions(-)

diff --git a/drivers/net/pse-pd/tps23881.c b/drivers/net/pse-pd/tps23881.c
index 5c4e88be46ee..20eab9857817 100644
--- a/drivers/net/pse-pd/tps23881.c
+++ b/drivers/net/pse-pd/tps23881.c
@@ -118,11 +118,7 @@ static int tps23881_pi_disable(struct pse_controller_dev *pcdev, int id)
 			val |= BIT(chan + 8);
 	}

-	ret = i2c_smbus_write_word_data(client, TPS23881_REG_PW_EN, val);
-	if (ret)
-		return ret;
-
-	return 0;
+	return i2c_smbus_write_word_data(client, TPS23881_REG_PW_EN, val);
 }

 static int tps23881_pi_is_enabled(struct pse_controller_dev *pcdev, int id)
@@ -488,7 +484,7 @@ tps23881_write_port_matrix(struct tps23881_priv *priv,
 	struct i2c_client *client = priv->client;
 	u8 pi_id, lgcl_chan, hw_chan;
 	u16 val = 0;
-	int i, ret;
+	int i;

 	for (i = 0; i < port_cnt; i++) {
 		pi_id = port_matrix[i].pi_id;
@@ -519,11 +515,7 @@ tps23881_write_port_matrix(struct tps23881_priv *priv,
 	}

 	/* Write hardware ports matrix */
-	ret = i2c_smbus_write_word_data(client, TPS23881_REG_PORT_MAP, val);
-	if (ret)
-		return ret;
-
-	return 0;
+	return i2c_smbus_write_word_data(client, TPS23881_REG_PORT_MAP, val);
 }

 static int
@@ -572,11 +564,7 @@ tps23881_set_ports_conf(struct tps23881_priv *priv,
 			val |= BIT(port_matrix[i].lgcl_chan[1]) |
 			       BIT(port_matrix[i].lgcl_chan[1] + 4);
 	}
-	ret = i2c_smbus_write_word_data(client, TPS23881_REG_DET_CLA_EN, val);
-	if (ret)
-		return ret;
-
-	return 0;
+	return i2c_smbus_write_word_data(client, TPS23881_REG_DET_CLA_EN, val);
 }

 static int
@@ -602,11 +590,7 @@ tps23881_set_ports_matrix(struct tps23881_priv *priv,
 	if (ret)
 		return ret;

-	ret = tps23881_set_ports_conf(priv, port_matrix);
-	if (ret)
-		return ret;
-
-	return 0;
+	return tps23881_set_ports_conf(priv, port_matrix);
 }

 static int tps23881_setup_pi_matrix(struct pse_controller_dev *pcdev)

-- 
2.34.1