diff --git a/[refs] b/[refs]
index 6bfb765746f1..b4066bc07842 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 75bb23a2150e385230d1db52065641ca7cef63d3
+refs/heads/master: cd8eca6f77108617a8c47a800533f1b78a357a79
diff --git a/trunk/drivers/staging/iio/dac/ad5686.c b/trunk/drivers/staging/iio/dac/ad5686.c
index 1d50dd176215..48389e1c19f1 100644
--- a/trunk/drivers/staging/iio/dac/ad5686.c
+++ b/trunk/drivers/staging/iio/dac/ad5686.c
@@ -327,7 +327,7 @@ static int ad5686_write_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case 0:
-		if (val > (1 << chan->scan_type.realbits))
+		if (val > (1 << chan->scan_type.realbits) || val < 0)
 			return -EINVAL;
 
 		mutex_lock(&indio_dev->mlock);