Replace "struct list_head head = LIST_HEAD_INIT(head)" with "LIST_HEAD(head)" to simplify the code. Signed-off-by: Cai Huoqing <cai.huoqing@linux.dev> Link: https://lore.kernel.org/r/20220209032645.38305-1-cai.huoqing@linux.dev Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>