There is no need to have a private helper function to access a private data member when a friend statement is needed anyhow. Remove the helper function to simplify the code and make it clear that a private member of Buffer is accessed. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>