diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c
index 7a940b755df6f2da4b313d37205397b6f4926c49..5f9877a3ebf57620b18d9caec66efc07f47522b2 100644
--- a/drivers/staging/comedi/drivers/rtd520.c
+++ b/drivers/staging/comedi/drivers/rtd520.c
@@ -407,8 +407,6 @@ struct rtdPrivate {
 /* Macros to access registers */
 
 /* Burst counter, 10bit */
-#define RtdBurstCount(dev) \
-	readl(devpriv->las0+LAS0_BCLK)
 #define RtdBurstCounter(dev, v) \
 	writel((v) & 0x3ff, devpriv->las0+LAS0_BCLK)