Commit 37611b57 authored by Sudeep Holla's avatar Sudeep Holla Committed by Greg Kroah-Hartman

mailbox: handle empty message in tx_tick

commit cb710ab1 upstream.

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: 2b6d83e2 ("mailbox: Introduce framework for mailbox")
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: default avatarJassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: default avatarAmit Pundir <amit.pundir@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3b2d738b
......@@ -99,8 +99,11 @@ 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)
......
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