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net: dsa: lantiq_gswip: Use dsa_is_cpu_port() in gswip_port_change_mtu()

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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@googlemail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Link: https://lore.kernel.org/r/20240611135434.3180973-8-ms@dev.tdt.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Martin Blumenstingl 2024-06-11 15:54:29 +02:00 committed by Jakub Kicinski
parent 86b9ea6412
commit 7168ec1b06
1 changed files with 1 additions and 2 deletions
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3
drivers/net/dsa/lantiq_gswip.c
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@ -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);