net: dsa: use ports list to find first CPU port

Use the new ports list instead of iterating over switches and their
ports when looking up the first CPU port in the tree.

Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 514c0195e2e81368ce94ab1f0feef02bddaddf9b..80191c7702a94541cbc5ada8c7147211f3a1d441 100644 (file)
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -186,22 +186,11 @@ static bool dsa_tree_setup_routing_table(struct dsa_switch_tree *dst)
 
 static struct dsa_port *dsa_tree_find_first_cpu(struct dsa_switch_tree *dst)
 {
-       struct dsa_switch *ds;
        struct dsa_port *dp;
-       int device, port;
-
-       for (device = 0; device < DSA_MAX_SWITCHES; device++) {
-               ds = dst->ds[device];
-               if (!ds)
-                       continue;
 
-               for (port = 0; port < ds->num_ports; port++) {
-                       dp = &ds->ports[port];
-
-                       if (dsa_port_is_cpu(dp))
-                               return dp;
-               }
-       }
+       list_for_each_entry(dp, &dst->ports, list)
+               if (dsa_port_is_cpu(dp))
+                       return dp;
 
        return NULL;
 }