MDIOBUS_READ_NESTED(9)                Network device support               MDIOBUS_READ_NESTED(9)



NAME
       mdiobus_read_nested - Nested version of the mdiobus_read function

SYNOPSIS
       int mdiobus_read_nested(struct mii_bus * bus, int addr, u32 regnum);

ARGUMENTS
       bus
           the mii_bus struct

       addr
           the phy address

       regnum
           register number to read

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
Kernel Hackers Manual 4.8.                 January 2017                    MDIOBUS_READ_NESTED(9)