Types plugin custom post add_action hooks

Try this way:

    add_action( 'save_post', 'myFunc');
function myFunc(){
if ($post->post_type == 'cpt' ) {
// do action here
}

OR

add_action( 'save_post', 'myFunc');
function myFunc(){
if ( 'cpt' == get_post_type() ) {
// do action here
}