1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index af3119707db..d1aee730d7d 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c
@@ -211,8 +211,12 @@ static ssize_t adp5520_bl_daylight_max_store(struct device *dev,
                         const char *buf, size_t count)
 {
         struct adp5520_bl *data = dev_get_drvdata(dev);
+        int ret;
+
+        ret = strict_strtoul(buf, 10, &data->cached_daylight_max);
+        if (ret < 0)
+                return ret;
 
-        strict_strtoul(buf, 10, &data->cached_daylight_max);
         return adp5520_store(dev, buf, count, ADP5520_DAYLIGHT_MAX);
 }
 static DEVICE_ATTR(daylight_max, 0664, adp5520_bl_daylight_max_show,