linux-kernel - [PATCH 5.10 116/252] net: dsa: sja1105: error out on unsupported PHY mode

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Message-Id: <20210531130701.933642091@linuxfoundation.org>
Date:   Mon, 31 May 2021 15:13:01 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Vladimir Oltean <vladimir.oltean@....com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.10 116/252] net: dsa: sja1105: error out on unsupported PHY mode

From: Vladimir Oltean <vladimir.oltean@....com>

commit 6729188d2646709941903052e4b78e1d82c239b9 upstream.

The driver continues probing when a port is configured for an
unsupported PHY interface type, instead it should stop.

Fixes: 8aa9ebccae87 ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/dsa/sja1105/sja1105_main.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -206,6 +206,7 @@ static int sja1105_init_mii_settings(str
 		default:
 			dev_err(dev, "Unsupported PHY mode %s!\n",
 				phy_modes(ports[i].phy_mode));
+			return -EINVAL;
 		}
 
 		/* Even though the SerDes port is able to drive SGMII autoneg