[PATCH net-next v5 07/12] net: dsa: lantiq_gswip: Use dsa_is_cpu_port() in gswip_port_change_mtu()

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From: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>

Make the check for the CPU port in gswip_port_change_mtu() consistent
with other areas of the driver by using dsa_is_cpu_port().

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>
Acked-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
 drivers/net/dsa/lantiq_gswip.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 8ec329d0c136..58c069f964dd 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1464,12 +1464,11 @@ static int gswip_port_max_mtu(struct dsa_switch *ds, int port)
 static int gswip_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
 {
 	struct gswip_priv *priv = ds->priv;
-	int cpu_port = priv->hw_info->cpu_port;
 
 	/* CPU port always has maximum mtu of user ports, so use it to set
 	 * switch frame size, including 8 byte special header.
 	 */
-	if (port == cpu_port) {
+	if (dsa_is_cpu_port(ds, port)) {
 		new_mtu += 8;
 		gswip_switch_w(priv, VLAN_ETH_HLEN + new_mtu + ETH_FCS_LEN,
 			       GSWIP_MAC_FLEN);
-- 
2.39.2





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