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
data
match
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¶
January 2017 | Kernel Hackers Manual 4.8. |