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| author | Sudeep Holla <sudeep.holla@arm.com> | 2017-03-21 11:30:16 +0000 |
|---|---|---|
| committer | Jassi Brar <jaswinder.singh@linaro.org> | 2017-04-27 16:20:04 +0530 |
| commit | cb710ab1d8a23f68ff8f45aedf3e552bb90e70de (patch) | |
| tree | 59a9d521b0b01091fa77aa994f6c200a693250e9 /drivers/mailbox | |
| parent | cc6eeaa3029a6dbcb4ad41b1f92876483bd88965 (diff) | |
| download | linux-cb710ab1d8a23f68ff8f45aedf3e552bb90e70de.tar.gz linux-cb710ab1d8a23f68ff8f45aedf3e552bb90e70de.tar.bz2 linux-cb710ab1d8a23f68ff8f45aedf3e552bb90e70de.zip | |
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')
| -rw-r--r-- | drivers/mailbox/mailbox.c | 5 |
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 */ msg_submit(chan); + 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) |