Name
dev_driver_string — 
  Return a device's driver name, if at all possible
 
Arguments
- dev
- 
     struct device to get the name of
     
Description
   Will return the device's driver's name if it is bound to a device.  If
   the device is not bound to a driver, it will return the name of the bus
   it is attached to.  If it is not attached to a bus either, an empty
   string will be returned.