diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mailbox/mailbox.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c index 4671f8a12872..59b722177bf7 100644 --- a/drivers/mailbox/mailbox.c +++ b/drivers/mailbox/mailbox.c @@ -453,6 +453,12 @@ int mbox_controller_register(struct mbox_controller *mbox) txdone = TXDONE_BY_ACK; if (txdone == TXDONE_BY_POLL) { + + if (!mbox->ops->last_tx_done) { + dev_err(mbox->dev, "last_tx_done method is absent\n"); + return -EINVAL; + } + hrtimer_init(&mbox->poll_hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL); mbox->poll_hrt.function = txdone_hrtimer; |