[PATCH net 3/7] net: dsa: mt7530: do not run mt7530_setup_port5() if port 5 is disabled

[arinc9.unal at gmail.com]

From: Arınç ÜNAL <arinc.unal at arinc9.com>

There's no need to run all the code on mt7530_setup_port5() if port 5 is
disabled. Run mt7530_setup_port5() if priv->p5_intf_sel is not P5_DISABLED
and remove the P5_DISABLED case from mt7530_setup_port5().

Stop initialising the interface variable as the remaining cases will always
call mt7530_setup_port5() with it initialised.

Fixes: 38f790a80560 ("net: dsa: mt7530: Add support for port 5")
Tested-by: Arınç ÜNAL <arinc.unal at arinc9.com>
Signed-off-by: Arınç ÜNAL <arinc.unal at arinc9.com>
---
 drivers/net/dsa/mt7530.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index eba356249ada..6d33c1050458 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -949,9 +949,6 @@ 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;
-	case P5_DISABLED:
-		interface = PHY_INTERFACE_MODE_NA;
-		break;
 	default:
 		dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
 			priv->p5_intf_sel);
@@ -2257,7 +2254,6 @@ mt7530_setup(struct dsa_switch *ds)
 		 * Determine if phy muxing is defined and which phy to mux.
 		 */
 		priv->p5_intf_sel = P5_DISABLED;
-		interface = PHY_INTERFACE_MODE_NA;
 
 		for_each_child_of_node(dn, mac_np) {
 			if (!of_device_is_compatible(mac_np,
@@ -2290,7 +2286,8 @@ mt7530_setup(struct dsa_switch *ds)
 			break;
 		}
 
-		mt7530_setup_port5(ds, interface);
+		if (priv->p5_intf_sel != P5_DISABLED)
+			mt7530_setup_port5(ds, interface);
 	}
 
 #ifdef CONFIG_GPIOLIB
-- 
2.37.2