linux_dsm_epyc7002/drivers/net/ethernet/cadence
Ahmad Fatoum ab5f11055f net: macb: Fix regression breaking non-MDIO fixed-link PHYs
commit 739de9a156 ("net: macb: Reorganize macb_mii bringup") broke
initializing macb on the EVB-KSZ9477 eval board.
There, of_mdiobus_register was called even for the fixed-link representing
the RGMII-link to the switch with the result that the driver attempts to
enumerate PHYs on a non-existent MDIO bus:

	libphy: MACB_mii_bus: probed
	mdio_bus f0028000.ethernet-ffffffff: fixed-link has invalid PHY address
	mdio_bus f0028000.ethernet-ffffffff: scan phy fixed-link at address 0
        [snip]
	mdio_bus f0028000.ethernet-ffffffff: scan phy fixed-link at address 31

The "MDIO" bus registration succeeds regardless, having claimed the reset GPIO,
and calling of_phy_register_fixed_link later on fails because it tries
to claim the same GPIO:

	macb f0028000.ethernet: broken fixed-link specification

Fix this by registering the fixed-link before calling mdiobus_register.

Fixes: 739de9a156 ("net: macb: Reorganize macb_mii bringup")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-25 17:30:02 -07:00
..
Kconfig net: ethernet: Add missing VENDOR to Cadence and Packet Engines symbols 2018-07-05 20:05:54 +09:00
macb_main.c net: macb: Fix regression breaking non-MDIO fixed-link PHYs 2018-08-25 17:30:02 -07:00
macb_pci.c net: cadence: macb: constify pci_device_id. 2017-07-17 13:37:15 -07:00
macb_ptp.c net: macb: Mark expected switch fall-through 2018-08-07 17:54:19 -07:00
macb.h net: macb: Allocate valid memory for TX and RX BD prefetch 2018-07-07 20:54:25 +09:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00