mdiobus_write_nested (9) Linux Manual Page
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.