bridge: Fix incorrect judgment of promisc

br_manage_promisc() incorrectly expects br_auto_port() to return only 0
or 1, while it actually returns flags, i.e., a subset of BR_AUTO_MASK.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index a08d2b8ebba6..3eca3fdf8fe1 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -153,7 +153,8 @@ void br_manage_promisc(struct net_bridge *br)
                          * This lets us disable promiscuous mode and write
                          * this config to hw.
                          */
-                        if (br->auto_cnt <= br_auto_port(p))
+                        if (br->auto_cnt == 0 ||
+                            (br->auto_cnt == 1 && br_auto_port(p)))
                                 br_port_clear_promisc(p);
                         else
                                 br_port_set_promisc(p);