diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c
index 046b47860266..8a24a66d9ba8 100644
--- a/drivers/video/aty/radeon_base.c
+++ b/drivers/video/aty/radeon_base.c
@@ -475,7 +475,7 @@ static int __devinit radeon_probe_pll_params(struct radeonfb_info *rinfo)
 	 */
 
 	/* Flush PCI buffers ? */
-	tmp = INREG(DEVICE_ID);
+	tmp = INREG16(DEVICE_ID);
 
 	local_irq_disable();
 
diff --git a/drivers/video/aty/radeonfb.h b/drivers/video/aty/radeonfb.h
index 659bc9f62244..01b8b2f78514 100644
--- a/drivers/video/aty/radeonfb.h
+++ b/drivers/video/aty/radeonfb.h
@@ -395,6 +395,8 @@ static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
 
 #define INREG8(addr)		readb((rinfo->mmio_base)+addr)
 #define OUTREG8(addr,val)	writeb(val, (rinfo->mmio_base)+addr)
+#define INREG16(addr)		readw((rinfo->mmio_base)+addr)
+#define OUTREG16(addr,val)	writew(val, (rinfo->mmio_base)+addr)
 #define INREG(addr)		readl((rinfo->mmio_base)+addr)
 #define OUTREG(addr,val)	writel(val, (rinfo->mmio_base)+addr)