netdev - [PATCH net] net: dsa: sja1105: Don't error out on disabled ports with no phy-mode

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Date:   Thu, 16 Jan 2020 20:36:35 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     davem@...emloft.net, netdev@...r.kernel.org, linux@...linux.org.uk
Cc:     andrew@...n.ch, f.fainelli@...il.com, vivien.didelot@...il.com,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH net] net: dsa: sja1105: Don't error out on disabled ports with no phy-mode

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

The sja1105_parse_ports_node function was tested only on device trees
where all ports were enabled. Fix this check so that the driver
continues to probe only with the ports where status is not "disabled",
as expected.

Fixes: 8aa9ebccae87 ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/dsa/sja1105/sja1105_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 784e6b8166a0..b27ef01b9445 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -580,6 +580,9 @@ static int sja1105_parse_ports_node(struct sja1105_private *priv,
 		u32 index;
 		int err;
 
+		if (!of_device_is_available(child))
+			continue;
+
 		/* Get switch port number from DT */
 		if (of_property_read_u32(child, "reg", &index) < 0) {
 			dev_err(dev, "Port number not defined in device tree "
-- 
2.17.1