#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
+#include <linux/sched.h>
#include <linux/serial.h>
#include <linux/delay.h>
#include <linux/ctype.h>
return 0;
}
-static struct tty_operations info_ops = {
+static const struct tty_operations info_ops = {
.open = info_open,
.ioctl = info_ioctl,
};