diff --git a/[refs] b/[refs]
index 6148f9d217bc..6ee43ac20fbf 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c7ce2500e3140b728d8a98a1acb1c2690af51eae
+refs/heads/master: 4f1aa846316d789ae2df6d22d6bca6e4a373e23d
diff --git a/trunk/drivers/video/backlight/adp8860_bl.c b/trunk/drivers/video/backlight/adp8860_bl.c
index a447c92acc51..734c650a47c4 100644
--- a/trunk/drivers/video/backlight/adp8860_bl.c
+++ b/trunk/drivers/video/backlight/adp8860_bl.c
@@ -502,8 +502,10 @@ static ssize_t adp8860_bl_l1_daylight_max_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	struct adp8860_bl *data = dev_get_drvdata(dev);
+	int ret = strict_strtoul(buf, 10, &data->cached_daylight_max);
+	if (ret)
+		return ret;
 
-	strict_strtoul(buf, 10, &data->cached_daylight_max);
 	return adp8860_store(dev, buf, count, ADP8860_BLMX1);
 }
 static DEVICE_ATTR(l1_daylight_max, 0664, adp8860_bl_l1_daylight_max_show,