table of contents
| 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.
COPYRIGHT¶
| April 2023 | Kernel Hackers Manual 2.6. |