linux-kernel - [RFC PATCH net-next 05/12] net: dsa: mt7530: remove p5_intf_sel default case from mt7530_setup

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Message-Id: <20230405203859.391267-6-arinc.unal@arinc9.com>
Date:   Wed,  5 Apr 2023 23:38:52 +0300
From:   arinc9.unal@...il.com
To:     René van Dorst <opensource@...rst.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Daniel Golle <daniel@...rotopia.org>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Russell King <linux@...linux.org.uk>
Cc:     Arınç ÜNAL <arinc.unal@...nc9.com>,
        Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>,
        Richard van Schagen <richard@...terhints.com>,
        Richard van Schagen <vschagen@...com>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        erkin.bozoglu@...ont.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [RFC PATCH net-next 05/12] net: dsa: mt7530: remove p5_intf_sel default case from mt7530_setup_port5()

From: Arınç ÜNAL <arinc.unal@...nc9.com>

There're two code paths for setting up port 5:

mt7530_setup()
-> mt7530_setup_port5()

mt753x_phylink_mac_config()
-> mt753x_mac_config()
   -> mt7530_mac_config()
      -> mt7530_setup_port5()

On the first code path, priv->p5_intf_sel is either set to
P5_INTF_SEL_PHY_P0 or P5_INTF_SEL_PHY_P4 when mt7530_setup_port5() is run.

On the second code path, priv->p5_intf_sel is set to P5_INTF_SEL_GMAC5 when
mt7530_setup_port5() is run.

Remove this default case which will never run.

Tested-by: Arınç ÜNAL <arinc.unal@...nc9.com>
Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
---
 drivers/net/dsa/mt7530.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index fccd59564532..8a47dcb96cdf 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -943,10 +943,6 @@ static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
 		/* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
 		val &= ~MHWTRAP_P5_DIS;
 		break;
-	default:
-		dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
-			priv->p5_intf_sel);
-		goto unlock_exit;
 	}
 
 	/* Setup RGMII settings */
@@ -980,7 +976,6 @@ static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
 	    priv->p5_intf_sel == P5_INTF_SEL_PHY_P4)
 		priv->p5_interface = interface;
 
-unlock_exit:
 	mutex_unlock(&priv->reg_mutex);
 }
 
-- 
2.37.2