path: root/drivers/mailbox
diff options
authorSudeep Holla <sudeep.holla@arm.com>2017-03-21 11:30:16 +0000
committerJassi Brar <jaswinder.singh@linaro.org>2017-04-27 16:20:04 +0530
commitcb710ab1d8a23f68ff8f45aedf3e552bb90e70de (patch)
tree59a9d521b0b01091fa77aa994f6c200a693250e9 /drivers/mailbox
parentcc6eeaa3029a6dbcb4ad41b1f92876483bd88965 (diff)
mailbox: handle empty message in tx_tick
We already check if the message is empty before calling the client tx_done callback. Calling completion on a wait event is also invalid if the message is empty. This patch moves the existing empty message check earlier. Fixes: 2b6d83e2b8b7 ("mailbox: Introduce framework for mailbox") Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'drivers/mailbox')
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c
index 49e5dadd5733..9dfbf7ea10a2 100644
--- a/drivers/mailbox/mailbox.c
+++ b/drivers/mailbox/mailbox.c
@@ -103,8 +103,11 @@ static void tx_tick(struct mbox_chan *chan, int r)
/* Submit next message */
+ if (!mssg)
+ return;
/* Notify the client */
- if (mssg && chan->cl->tx_done)
+ if (chan->cl->tx_done)
chan->cl->tx_done(chan->cl, mssg, r);
if (r != -ETIME && chan->cl->tx_block)

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