1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c
index c281e5562876..58789b027708 100644
--- a/drivers/mailbox/mailbox.c
+++ b/drivers/mailbox/mailbox.c
@@ -78,6 +78,8 @@ static void msg_submit(struct mbox_chan *chan)
 
         data = chan->msg_data[idx];
 
+        if (chan->cl->tx_prepare)
+                chan->cl->tx_prepare(chan->cl, data);
         /* Try to submit a message to the MBOX controller */
         err = chan->mbox->ops->send_data(chan, data);
         if (!err) {