centos man page for bus_find_device

BUS_FIND_DEVICE(9)					   Device drivers infrastructure					BUS_FIND_DEVICE(9)

NAME
       bus_find_device - device iterator for locating a particular device.

SYNOPSIS
       struct device * bus_find_device(struct bus_type * bus, struct device * start, void * data, int (*match) (struct device *dev, void *data));

ARGUMENTS
       bus
	   bus type

       start
	   Device to begin with

       data
	   Data to pass to match function

       match
	   Callback function to check device

DESCRIPTION
       This is similar to the bus_for_each_dev function above, but it returns a reference to a device that is 'found' for later use, as determined
       by the match callback.

       The callback should return 0 if the device doesn't match and non-zero if it does. If the callback returns non-zero, this function will
       return to the caller and not iterate over any more devices.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							BUS_FIND_DEVICE(9)