net: dsa: mt7530: drop paranoid checks in .get_tag_protocol()

It is desirable to reduce the surface of DSA_TAG_PROTO_NONE as much as
we can, because we now have options for switches without hardware
support for DSA tagging, and the occurrence in the mt7530 driver is in
fact quite gratuitout and easy to remove. Since ds->ops->get_tag_protocol()
is only called for CPU ports, the checks for a CPU port in
mtk_get_tag_protocol() are redundant and can be removed.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 69f21b71614c5bec59ca6189f620e4ec9ab08007..b6e0b347947ea27406e05ef5d348d64df12d1c27 100644 (file)
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1717,15 +1717,7 @@ static enum dsa_tag_protocol
 mtk_get_tag_protocol(struct dsa_switch *ds, int port,
                     enum dsa_tag_protocol mp)
 {
-       struct mt7530_priv *priv = ds->priv;
-
-       if (port != MT7530_CPU_PORT) {
-               dev_warn(priv->dev,
-                        "port not matched with tagging CPU port\n");
-               return DSA_TAG_PROTO_NONE;
-       } else {
-               return DSA_TAG_PROTO_MTK;
-       }
+       return DSA_TAG_PROTO_MTK;
 }
 
 #ifdef CONFIG_GPIOLIB