diff --git a/drivers/staging/comedi/drivers/daqboard2000.c b/drivers/staging/comedi/drivers/daqboard2000.c
index ba61e328fd29..ef28385c1482 100644
--- a/drivers/staging/comedi/drivers/daqboard2000.c
+++ b/drivers/staging/comedi/drivers/daqboard2000.c
@@ -318,7 +318,7 @@ struct daqboard2000_private {
 		card_daqboard_2000
 	} card;
 	void *daq;
-	void *plx;
+	void __iomem *plx;
 	unsigned int ao_readback[2];
 };