Man page 9 : devm_add_action

devm_add_action - add a custom action to list of managed resources

int devm_add_action(struct device *  dev , void (* action ) (void *), void *  data );

dev
    Device that owns the action

action
    Function that should be called

data
    Pointer to data passed to action implementation

This adds a custom action to the list of managed resources so that it gets executed as part of standard resource unwinding.