diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 8f3566cde3eb0..355e9cad680d6 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -454,6 +454,8 @@ receive_buf(struct tty_struct *tty, struct tty_buffer *head, int count)
 		if (count && disc->ops->receive_buf)
 			disc->ops->receive_buf(tty, p, f, count);
 	}
+	if (count > 0)
+		memset(p, 0, count);
 	return count;
 }