diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index d215edf66af2356562df4eaa09a29479f2e659fe..4d4870787eede59fd6a73d23ba4ca29df48bbe2e 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -188,7 +188,7 @@ static void ad7280_delay(struct ad7280_state *st)
 	if (st->readback_delay_us < 50)
 		udelay(st->readback_delay_us);
 	else
-		msleep(1);
+		usleep_range(250, 500);
 }
 
 static int __ad7280_read32(struct ad7280_state *st, unsigned *val)