static ioctl_fcn_t audit_pipe_ioctl;
static select_fcn_t audit_pipe_poll;
-static struct cdevsw audit_pipe_cdevsw = {
+static const struct cdevsw audit_pipe_cdevsw = {
.d_open = audit_pipe_open,
.d_close = audit_pipe_close,
.d_read = audit_pipe_read,