mailbox: Make mbox_chan_ops const

The mailbox controller's channel ops ought to be read-only.  Update
all the mailbox drivers to make their mbox_chan_ops const as well.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Cc: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Cc: Ley Foon Tan <lftan@altera.com>
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

5 files changed, 5 insertions, 5 deletions

diff --git a/drivers/mailbox/arm_mhu.c b/drivers/mailbox/arm_mhu.c
index ac693c635357..d9e99f981aa9 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 a266265677d3..bb682c926b0a 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 0f332c178b07..03f8545ba037 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 7e91d68a3ac3..26d121d1d501 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 d4cf96f07cfc..68c42454439b 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;