CLASS_FIND_DEVICE(9)              Device drivers infrastructure              CLASS_FIND_DEVICE(9)



NAME
       class_find_device - device iterator for locating a particular device

SYNOPSIS
       struct device * class_find_device(struct class * class, struct device * start,
                                         const void * data,
                                         int (*match) (struct device *, const void *));

ARGUMENTS
       class
           the class we're iterating

       start
           Device to begin with

       data
           data for the match function

       match
           function to check device

DESCRIPTION
       This is similar to the class_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.

       Note, you will need to drop the reference with put_device after use.

       match is allowed to do anything including calling back into class code. There's no locking
       restriction.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                      CLASS_FIND_DEVICE(9)