device_find_child (9)

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

parent

parent struct device

data

Data to pass to match function

match

Callback function to check device

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.

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