-int riocontrol(p, dev, cmd, arg, su)
-struct rio_info *p;
-dev_t dev;
-int cmd;
-caddr_t arg;
-int su;
+static int copy_from_io(void __user *to, void __iomem *from, size_t size)
+{
+ void *buf = kmalloc(size, GFP_KERNEL);
+ int res = -ENOMEM;
+ if (buf) {
+ rio_memcpy_fromio(buf, from, size);
+ res = copy_to_user(to, buf, size);
+ kfree(buf);
+ }
+ return res;
+}
+
+int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su)