From 72579e14a1d3d3d561039dfe7e5f47aaf22e3fd3 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 21 Apr 2020 20:18:53 +0300
Subject: [PATCH] net: dsa: don't fail to probe if we couldn't set the MTU
There is no reason to fail the probing of the switch if the MTU couldn't
be configured correctly (either the switch port itself, or the host
port) for whatever reason. MTU-sized traffic probably won't work, sure,
but we can still probably limp on and support some form of communication
anyway, which the users would probably appreciate more.
Fixes: bfcb813203e6 ("net: dsa: configure the MTU for switch ports")
Reported-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/dsa/slave.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index e94eb1aac6029..d1068803cd111 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1770,11 +1770,9 @@ int dsa_slave_create(struct dsa_port *port)
rtnl_lock();
ret = dsa_slave_change_mtu(slave_dev, ETH_DATA_LEN);
rtnl_unlock();
- if (ret && ret != -EOPNOTSUPP) {
- dev_err(ds->dev, "error %d setting MTU on port %d\n",
- ret, port->index);
- goto out_free;
- }
+ if (ret)
+ dev_warn(ds->dev, "nonfatal error %d setting MTU on port %d\n",
+ ret, port->index);
netif_carrier_off(slave_dev);
--
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