1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/char/rio/rio.h b/drivers/char/rio/rio.h
index 7f45e1ab5332..2d466ffe112d 100644
--- a/drivers/char/rio/rio.h
+++ b/drivers/char/rio/rio.h
@@ -186,8 +186,8 @@ static char *_rio_h_sccs_ = "@(#)rio.h	1.3";
 **      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) (((caddr_t)(C))+(0xFFFF&(O)))
-#define RIO_OFF(C,O) ((int)(O)-(int)(C))
+#define RIO_PTR(C,O) (((unsigned char *)(C))+(0xFFFF&(O)))
+#define RIO_OFF(C,O) ((long)(O)-(long)(C))
 
 /*
 **      How to convert from various different device number formats: