devm_free_irq(mb_chan->dev, mb_chan->irq, mb_chan);
}
-static struct mbox_chan_ops slimpro_mbox_ops = {
+static const struct mbox_chan_ops slimpro_mbox_ops = {
.send_data = slimpro_mbox_send_data,
.startup = slimpro_mbox_startup,
.shutdown = slimpro_mbox_shutdown,