list_first_entry - get the first element from a list
2. SYNOPSIS ▲
list_first_entry( ptr , type , member );
3. ARGUMENTS ▲
the list head to take the element from.
the type of the struct this is embedded in.
the name of the list_struct within the struct.
4. DESCRIPTION ▲
Note, that list is expected to be not empty.
5. COPYRIGHT ▲