[PATCH net-next v7 2/6] net: dsa: microchip: do not store max MTU for all ports
From: Oleksij Rempel
Date: Mon Dec 05 2022 - 00:23:36 EST
If we have global MTU configuration, it is enough to configure it on CPU
port only.
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>
Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
drivers/net/dsa/microchip/ksz9477.c | 14 +++++---------
drivers/net/dsa/microchip/ksz_common.h | 1 -
2 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index 602d00671bef..f6e7968ab105 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -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;
-
- frame_size = mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+ u16 frame_size;
- /* Cache the per-port MTU setting */
- dev->ports[port].max_frame = frame_size;
+ if (!dsa_is_cpu_port(dev->ds, port))
+ return 0;
- for (i = 0; i < dev->info->port_cnt; i++)
- max_frame = max(max_frame, dev->ports[i].max_frame);
+ frame_size = mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
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)
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 27c26ee15af4..61228be299f9 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -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;
--
2.30.2