From: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Date: Tue, 23 Jun 2015 14:26:04 +0000 (-0400)
Subject: net: switchdev: ignore unsupported bridge flags
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5c8079d049c8452aeacec96a260200d468afc87d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

net: switchdev: ignore unsupported bridge flags

switchdev_port_bridge_getlink() queries SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS
attributes, but a driver doesn't need to implement this in order to get
bridge link information.

So error out only on errors different than -EOPNOTSUPP.

(This is a follow-up patch for 7d4f8d8.)

Fixes: 8793d0a664a8 ("switchdev: add new switchdev_port_bridge_getlink")
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index f01d34075749..84f77a054025 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -532,7 +532,7 @@ int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 	int err;
 
 	err = switchdev_port_attr_get(dev, &attr);
-	if (err)
+	if (err && err != -EOPNOTSUPP)
 		return err;
 
 	return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,