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¶
parentparent 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¶
March 2016 | Kernel Hackers Manual 3.2. |