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net: mdiobus: add unlocked accessors

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Add unlocked versions of the bus accessors, which allows access to the
bus with all the tracing. These accessors validate that the bus mutex
is held, which is a basic requirement for all mii bus accesses.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2018-01-02 10:58:27 +00:00 • committed by David S. Miller
parent be6e36d916
commit 34dc08e4be
2 changed files with 56 additions and 12 deletions
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3
include/linux/mdio.h
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@ -262,6 +262,9 @@ static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv)
return reg;
}
int __mdiobus_read(struct mii_bus *bus, int addr, u32 regnum);
int __mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val);
int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum);
int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum);
int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val);