netdev - [PATCH net-next v4 1/7] net: dsa: mt7530: empty default case on mt7530_setup

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Date: Sun, 04 Feb 2024 19:34:19 +0300
From: Arınç ÜNAL via B4 Relay
 <devnull+arinc.unal.arinc9.com@...nel.org>
To: Daniel Golle <daniel@...rotopia.org>, DENG Qingfang <dqfext@...il.com>, 
 Sean Wang <sean.wang@...iatek.com>, 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: mithat.guner@...ont.com, erkin.bozoglu@...ont.com, 
 Bartel Eerdekens <bartel.eerdekens@...stell8.be>, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, 
 Arınç ÜNAL <arinc.unal@...nc9.com>, 
 "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Subject: [PATCH net-next v4 1/7] net: dsa: mt7530: empty default case on
 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.

Empty the default case which will never run but is needed nonetheless to
handle all the remaining enumeration values.

Reviewed-by: Vladimir Oltean <olteanv@...il.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
---
 drivers/net/dsa/mt7530.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 68be38ae66e0..330e22abc076 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -943,9 +943,7 @@ static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
 		val &= ~MHWTRAP_P5_DIS;
 		break;
 	default:
-		dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
-			priv->p5_intf_sel);
-		goto unlock_exit;
+		break;
 	}

 	/* Setup RGMII settings */
@@ -975,7 +973,6 @@ static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
 	dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
 		val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));

-unlock_exit:
 	mutex_unlock(&priv->reg_mutex);
 }

-- 
2.40.1