device_find_child man page on OpenSuSE

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DEVICE_FIND_CHILD(9)	 Device drivers infrastructure	  DEVICE_FIND_CHILD(9)

NAME
       device_find_child - device iterator for locating a particular device.

SYNOPSIS
       struct device * device_find_child(struct device * parent, void * data,
					 int (*match) (struct device *dev, void *data));

ARGUMENTS
       parent
	   parent struct device

       data
	   Data to pass to match function

       match
	   Callback function to check device

DESCRIPTION
       This is similar to the device_for_each_child 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 and a reference to the
       current device can be obtained, 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.

COPYRIGHT
Kernel Hackers Manual 3.11	 November 2013		  DEVICE_FIND_CHILD(9)
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