This is a note to let you know that I've just added the patch titled
mailbox: mtk-cmdq: Fix pm_runtime_get_sync() warning in mbox shutdown
to the 6.9-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-mtk-cmdq-fix-pm_runtime_get_sync-warning-in-.patch
and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2e11023e083c7edd78ee7728c4b91477cead2ee9
Author: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
Date: Fri Apr 26 10:01:21 2024 +0800
mailbox: mtk-cmdq: Fix pm_runtime_get_sync() warning in mbox shutdown
[ Upstream commit 747a69a119c469121385543f21c2d08562968ccc ]
The return value of pm_runtime_get_sync() in cmdq_mbox_shutdown()
will return 1 when pm runtime state is active, and we don't want to
get the warning message in this case.
So we change the return value < 0 for WARN_ON().
Fixes: 8afe816b0c99 ("mailbox: mtk-cmdq-mailbox: Implement Runtime PM with autosuspend")
Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Signed-off-by: Jassi Brar <jassisinghbrar@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index ead2200f39ba0..033aff11f87cf 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -465,7 +465,7 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan)
struct cmdq_task *task, *tmp;
unsigned long flags;
- WARN_ON(pm_runtime_get_sync(cmdq->mbox.dev));
+ WARN_ON(pm_runtime_get_sync(cmdq->mbox.dev) < 0);
spin_lock_irqsave(&thread->chan->lock, flags);
if (list_empty(&thread->task_busy_list))
