diff options
Diffstat (limited to 'kernel/ethosu_mailbox.c')
| -rw-r--r-- | kernel/ethosu_mailbox.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/ethosu_mailbox.c b/kernel/ethosu_mailbox.c index 014ceb8..b5cde0d 100644 --- a/kernel/ethosu_mailbox.c +++ b/kernel/ethosu_mailbox.c @@ -105,7 +105,8 @@ static size_t ethosu_queue_available(struct ethosu_core_queue *queue) static size_t ethosu_queue_capacity(struct ethosu_core_queue *queue) { - return queue->header.size - ethosu_queue_available(queue); + return max_t(ssize_t, + queue->header.size - ethosu_queue_available(queue) - 1, 0); } static int ethosu_queue_write(struct ethosu_mailbox *mbox, |