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net: usb: lan78xx: remove explicit check for missing PHY driver

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RGMII timing correctness relies on the PHY providing internal delays.
This is typically ensured via PHY driver, strap pins, or PCB layout.

Explicitly checking for a PHY driver here is unnecessary and non-standard.
This logic applies to all MACs, not just LAN78xx, and should be left to
phylib, phylink, or platform configuration.

Drop the check and rely on standard subsystem behavior.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Thangaraj Samynathan <thangaraj.s@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oleksij Rempel
2025-05-05 10:43:36 +02:00
committed by David S. Miller
parent 232aa459aa
commit 3da0ae5270
1 changed files with 0 additions and 4 deletions
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4
drivers/net/usb/lan78xx.c
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@@ -2543,10 +2543,6 @@ static struct phy_device *lan7801_phy_init(struct lan78xx_net *dev)
if (ret < 0)
return ERR_PTR(ret);
} else {
if (!phydev->drv) {
netdev_err(dev->net, "no PHY driver found\n");
return ERR_PTR(-EINVAL);
}
dev->interface = PHY_INTERFACE_MODE_RGMII_ID;
/* The PHY driver is responsible to configure proper RGMII
* interface delays. Disable RGMII delays on MAC side.