diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/dsa/dsa2.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index b71e87909f0e..ba244fbd9646 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -1259,6 +1259,13 @@ static int dsa_switch_parse_member_of(struct dsa_switch *ds, if (!ds->dst) return -ENOMEM; + if (dsa_switch_find(ds->dst->index, ds->index)) { + dev_err(ds->dev, + "A DSA switch with index %d already exists in tree %d\n", + ds->index, ds->dst->index); + return -EEXIST; + } + return 0; } |