From afb3cc1a397d77771f342691b7e6b032a234d7f2 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Thu, 3 Mar 2022 16:08:40 +0200
Subject: [PATCH] net: dsa: unlock the rtnl_mutex when dsa_master_setup() fails
After the blamed commit, dsa_tree_setup_master() may exit without
calling rtnl_unlock(), fix that.
Fixes: c146f9bc195a ("net: dsa: hold rtnl_mutex when calling dsa_master_{setup,teardown}")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/dsa/dsa2.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index b4e67758e104..074e4a69a728 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -1058,7 +1058,7 @@ static int dsa_tree_setup_switches(struct dsa_switch_tree *dst)
static int dsa_tree_setup_master(struct dsa_switch_tree *dst)
{
struct dsa_port *dp;
- int err;
+ int err = 0;
rtnl_lock();
@@ -1066,13 +1066,13 @@ static int dsa_tree_setup_master(struct dsa_switch_tree *dst)
if (dsa_port_is_cpu(dp)) {
err = dsa_master_setup(dp->master, dp);
if (err)
- return err;
+ break;
}
}
rtnl_unlock();
- return 0;
+ return err;
}
static void dsa_tree_teardown_master(struct dsa_switch_tree *dst)