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net: dsa: microchip: do not store max MTU for all ports

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If we have global MTU configuration, it is enough to configure it on CPU
port only.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Oleksij Rempel 2022-12-05 06:22:28 +01:00 committed by Paolo Abeni
parent 838c19f894
commit 1d0a1a6d0d
2 changed files with 5 additions and 10 deletions
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14
drivers/net/dsa/microchip/ksz9477.c
View File

@ -45,19 +45,15 @@ static void ksz9477_port_cfg32(struct ksz_device *dev, int port, int offset,
int ksz9477_change_mtu(struct ksz_device *dev, int port, int mtu)
{
u16 frame_size, max_frame = 0;
int i;
u16 frame_size;
if (!dsa_is_cpu_port(dev->ds, port))
return 0;
frame_size = mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
/* Cache the per-port MTU setting */
dev->ports[port].max_frame = frame_size;
for (i = 0; i < dev->info->port_cnt; i++)
max_frame = max(max_frame, dev->ports[i].max_frame);
return regmap_update_bits(dev->regmap[1], REG_SW_MTU__2,
REG_SW_MTU_MASK, max_frame);
REG_SW_MTU_MASK, frame_size);
}
static int ksz9477_wait_vlan_ctrl_ready(struct ksz_device *dev)

1
drivers/net/dsa/microchip/ksz_common.h
View File

@ -95,7 +95,6 @@ struct ksz_port {
struct ksz_port_mib mib;
phy_interface_t interface;
u16 max_frame;
u32 rgmii_tx_val;
u32 rgmii_rx_val;
struct ksz_device *ksz_dev;