From: <gregkh@linuxfoundation.org>
To: sudeep.holla@arm.com, amit.pundir@linaro.org,
gregkh@linuxfoundation.org, jaswinder.singh@linaro.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "mailbox: handle empty message in tx_tick" has been added to the 3.18-stable tree
Date: Thu, 03 Aug 2017 15:43:59 -0700 [thread overview]
Message-ID: <1501800239149234@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
mailbox: handle empty message in tx_tick
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mailbox-handle-empty-message-in-tx_tick.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From cb710ab1d8a23f68ff8f45aedf3e552bb90e70de Mon Sep 17 00:00:00 2001
From: Sudeep Holla <sudeep.holla@arm.com>
Date: Tue, 21 Mar 2017 11:30:16 +0000
Subject: mailbox: handle empty message in tx_tick
From: Sudeep Holla <sudeep.holla@arm.com>
commit cb710ab1d8a23f68ff8f45aedf3e552bb90e70de 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: 2b6d83e2b8b7 ("mailbox: Introduce framework for mailbox")
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mailbox/mailbox.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/mailbox/mailbox.c
+++ b/drivers/mailbox/mailbox.c
@@ -99,8 +99,11 @@ static void tx_tick(struct mbox_chan *ch
/* 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)
Patches currently in stable-queue which might be from sudeep.holla@arm.com are
queue-3.18/mailbox-always-wait-in-mbox_send_message-for-blocking-tx-mode.patch
queue-3.18/mailbox-skip-complete-wait-event-if-timer-expired.patch
queue-3.18/mailbox-handle-empty-message-in-tx_tick.patch
reply other threads:[~2017-08-03 22:44 UTC|newest]
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