** RIO_OBJ takes hostp->Caddr and a UNIX pointer to an object and
** returns the offset into the DP RAM area.
*/
-#define RIO_PTR(C,O) (((unsigned char *)(C))+(0xFFFF&(O)))
-#define RIO_OFF(C,O) ((long)(O)-(long)(C))
+#define RIO_PTR(C,O) (((unsigned char __iomem *)(C))+(0xFFFF&(O)))
+#define RIO_OFF(C,O) ((unsigned char __iomem *)(O)-(unsigned char __iomem *)(C))
/*
** How to convert from various different device number formats: