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MDIOBUS_WRITE_NESTED(9) Network device support MDIOBUS_WRITE_NESTED(9)

NAME

mdiobus_write_nested - Nested version of the mdiobus_write function

SYNOPSIS

int mdiobus_write_nested(struct mii_bus * bus, int addr, u32 regnum, u16 val);

ARGUMENTS

bus
the mii_bus struct
addr
the phy address
regnum
register number to write
val
value to write to regnum

DESCRIPTION

In case of nested MDIO bus access avoid lockdep false positives by using mutex_lock_nested.

NOTE

MUST NOT be called from interrupt context, because the bus read/write functions may wait for an interrupt to conclude the operation.

COPYRIGHT

May 2018 Kernel Hackers Manual 4.9.