diff options
Diffstat (limited to 'net/dsa/dsa2.c')
| -rw-r--r-- | net/dsa/dsa2.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index f1f96e2e56aa..42422ddea59b 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -387,6 +387,20 @@ static struct dsa_port *dsa_tree_find_first_cpu(struct dsa_switch_tree *dst) return NULL; } +struct net_device *dsa_tree_find_first_master(struct dsa_switch_tree *dst) +{ + struct device_node *ethernet; + struct net_device *master; + struct dsa_port *cpu_dp; + + cpu_dp = dsa_tree_find_first_cpu(dst); + ethernet = of_parse_phandle(cpu_dp->dn, "ethernet", 0); + master = of_find_net_device_by_node(ethernet); + of_node_put(ethernet); + + return master; +} + /* Assign the default CPU port (the first one in the tree) to all ports of the * fabric which don't already have one as part of their own switch. */ |