diff --git a/drivers/leds/uleds.c b/drivers/leds/uleds.c
index ace71ffc0591..470015e3f802 100644
--- a/drivers/leds/uleds.c
+++ b/drivers/leds/uleds.c
@@ -147,10 +147,13 @@ static ssize_t uleds_read(struct file *file, char __user *buffer, size_t count,
 		} else if (!udev->new_data && (file->f_flags & O_NONBLOCK)) {
 			retval = -EAGAIN;
 		} else if (udev->new_data) {
-			retval = copy_to_user(buffer, &udev->brightness,
-					      sizeof(udev->brightness));
-			udev->new_data = false;
-			retval = sizeof(udev->brightness);
+			if (copy_to_user(buffer, &udev->brightness,
+					 sizeof(udev->brightness))) {
+				retval = -EFAULT;
+			} else {
+				udev->new_data = false;
+				retval = sizeof(udev->brightness);
+			}
 		}
 
 		mutex_unlock(&udev->mutex);