diff --git a/drivers/mailbox/arm_mhu.c b/drivers/mailbox/arm_mhu.c
index ac693c63535769442aba9a452947850f88c8016f..d9e99f981aa98ee229a40517d7fa86a14533d886 100644
--- a/drivers/mailbox/arm_mhu.c
+++ b/drivers/mailbox/arm_mhu.c
@@ -110,7 +110,7 @@ static void mhu_shutdown(struct mbox_chan *chan)
 	free_irq(mlink->irq, chan);
 }
 
-static struct mbox_chan_ops mhu_ops = {
+static const struct mbox_chan_ops mhu_ops = {
 	.send_data = mhu_send_data,
 	.startup = mhu_startup,
 	.shutdown = mhu_shutdown,
diff --git a/drivers/mailbox/mailbox-altera.c b/drivers/mailbox/mailbox-altera.c
index a266265677d3ebf533290a01a1a0af6212f2e292..bb682c926b0a048ab1918ba13a89c140dff19d96 100644
--- a/drivers/mailbox/mailbox-altera.c
+++ b/drivers/mailbox/mailbox-altera.c
@@ -285,7 +285,7 @@ static void altera_mbox_shutdown(struct mbox_chan *chan)
 	}
 }
 
-static struct mbox_chan_ops altera_mbox_ops = {
+static const struct mbox_chan_ops altera_mbox_ops = {
 	.send_data = altera_mbox_send_data,
 	.startup = altera_mbox_startup,
 	.shutdown = altera_mbox_shutdown,
diff --git a/drivers/mailbox/omap-mailbox.c b/drivers/mailbox/omap-mailbox.c
index 0f332c178b07a049d3153887b57643659ed2487b..03f8545ba0371488abbc33b5252dab29def02828 100644
--- a/drivers/mailbox/omap-mailbox.c
+++ b/drivers/mailbox/omap-mailbox.c
@@ -604,7 +604,7 @@ static int omap_mbox_chan_send_data(struct mbox_chan *chan, void *data)
 	return ret;
 }
 
-static struct mbox_chan_ops omap_mbox_chan_ops = {
+static const struct mbox_chan_ops omap_mbox_chan_ops = {
 	.startup        = omap_mbox_chan_startup,
 	.send_data      = omap_mbox_chan_send_data,
 	.shutdown       = omap_mbox_chan_shutdown,
diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index 7e91d68a3ac3d02b2622315b2745f605c5961300..26d121d1d501b7617857a364a63c9dd4b97c1438 100644
--- a/drivers/mailbox/pcc.c
+++ b/drivers/mailbox/pcc.c
@@ -198,7 +198,7 @@ static int pcc_send_data(struct mbox_chan *chan, void *data)
 	return 0;
 }
 
-static struct mbox_chan_ops pcc_chan_ops = {
+static const struct mbox_chan_ops pcc_chan_ops = {
 	.send_data = pcc_send_data,
 };
 
diff --git a/include/linux/mailbox_controller.h b/include/linux/mailbox_controller.h
index d4cf96f07cfc42452f7bafb1d546cf64b984319e..68c42454439be372caba99424ef6a57bac5f5c2d 100644
--- a/include/linux/mailbox_controller.h
+++ b/include/linux/mailbox_controller.h
@@ -72,7 +72,7 @@ struct mbox_chan_ops {
  */
 struct mbox_controller {
 	struct device *dev;
-	struct mbox_chan_ops *ops;
+	const struct mbox_chan_ops *ops;
 	struct mbox_chan *chans;
 	int num_chans;
 	bool txdone_irq;