class_for_each_device - device iterator
2. SYNOPSIS ▲
int class_for_each_device(struct class * class , struct device * start , void * data , int (* fn ) (struct device *, void *));
3. ARGUMENTS ▲
the class weAqre iterating
the device to start with in the list, if any.
data for the callback
function to be called for each device
4. DESCRIPTION ▲
Iterate over classAqs list of devices, and call fn for each, passing it data. If start is set, the list iteration will start there, otherwise if it is NULL, the iteration starts at the beginning of the list.
We check the return of fn each time. If it returns anything other than 0, we break out and return that value.
fn is allowed to do anything including calling back into class code. ThereAqs no locking restriction.
5. COPYRIGHT ▲