forked from mirrors/linux
ac53c26433
The newly implemented fwnode_mdbiobus_register turned out to be
problematic - in case the fwnode_/of_/acpi_mdio are built as
modules, a dependency cycle can be observed during the depmod phase of
modules_install, eg.:
depmod: ERROR: Cycle detected: fwnode_mdio -> of_mdio -> fwnode_mdio
depmod: ERROR: Found 2 modules in dependency cycles!
OR:
depmod: ERROR: Cycle detected: acpi_mdio -> fwnode_mdio -> acpi_mdio
depmod: ERROR: Found 2 modules in dependency cycles!
A possible solution could be to rework fwnode_mdiobus_register,
so that to merge the contents of acpi_mdiobus_register and
of_mdiobus_register. However feasible, such change would
be very intrusive and affect huge amount of the of_mdiobus_register
users.
Since there are currently 2 users of ACPI and MDIO
(xgmac_mdio and mvmdio), withdraw the fwnode_mdbiobus_register
and roll back to a simple 'if' condition in affected drivers.
Fixes: 62a6ef6a99 ("net: mdiobus: Introduce fwnode_mdbiobus_register()")
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
35 lines
858 B
C
35 lines
858 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* FWNODE helper for the MDIO (Ethernet PHY) API
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*/
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#ifndef __LINUX_FWNODE_MDIO_H
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#define __LINUX_FWNODE_MDIO_H
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#include <linux/phy.h>
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#if IS_ENABLED(CONFIG_FWNODE_MDIO)
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int fwnode_mdiobus_phy_device_register(struct mii_bus *mdio,
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struct phy_device *phy,
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struct fwnode_handle *child, u32 addr);
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int fwnode_mdiobus_register_phy(struct mii_bus *bus,
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struct fwnode_handle *child, u32 addr);
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#else /* CONFIG_FWNODE_MDIO */
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int fwnode_mdiobus_phy_device_register(struct mii_bus *mdio,
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struct phy_device *phy,
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struct fwnode_handle *child, u32 addr)
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{
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return -EINVAL;
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}
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static inline int fwnode_mdiobus_register_phy(struct mii_bus *bus,
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struct fwnode_handle *child,
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u32 addr)
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{
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return -EINVAL;
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}
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#endif
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#endif /* __LINUX_FWNODE_MDIO_H */
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