mdiobus_read_nested (9) - Linux Manuals

mdiobus_read_nested: Nested version of the mdiobus_read function

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.

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