#include <linux/poll.h>
#include <linux/vmalloc.h>
+#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
return ret;
}
-static struct file_operations mISDN_fops = {
+static const struct file_operations mISDN_fops = {
.read = mISDN_read,
.poll = mISDN_poll,
.ioctl = mISDN_ioctl,