This is a note to let you know that I've just added the patch titled
mtd: rawnand: omap_elm: Fix runtime PM imbalance on error
to the 4.19-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:
mtd-rawnand-omap_elm-fix-runtime-pm-imbalance-on-err.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2eaa8448350a29388ef71ceaffa591bb28e7af7b
Author: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Date: Fri May 22 18:40:06 2020 +0800
mtd: rawnand: omap_elm: Fix runtime PM imbalance on error
[ Upstream commit 37f7212148cf1d796135cdf8d0c7fee13067674b ]
pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.
Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20200522104008.28340-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/mtd/nand/raw/omap_elm.c b/drivers/mtd/nand/raw/omap_elm.c
index a3f32f939cc17..6736777a41567 100644
--- a/drivers/mtd/nand/raw/omap_elm.c
+++ b/drivers/mtd/nand/raw/omap_elm.c
@@ -421,6 +421,7 @@ static int elm_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
if (pm_runtime_get_sync(&pdev->dev) < 0) {
ret = -EINVAL;
+ pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
dev_err(&pdev->dev, "can't enable clock\n");
return ret;
