+ * mucse_read_mbx - Reads a message from the mailbox
+ * @hw: pointer to the HW structure
+ * @msg: the message buffer
+ * @size: length of buffer
+ *
+ * @return: 0 on success, negative on failure
+ **/
+int mucse_read_mbx(struct mucse_hw *hw, u32 *msg, u16 size)
+{
+	struct mucse_mbx_info *mbx = &hw->mbx;
+
+	/* limit read size */
+	min(size, mbx->size);

you have to store the result of min() as it's lost now