The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
Possible dependencies:
3ada71310d2c ("mtd: rawnand: tegra: Fix PM disable depth imbalance in probe") 6902dc2fd57c ("mtd: rawnand: tegra: Add runtime PM and OPP support")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 3ada71310d2c68eebb57772df6bb1f5f033ae802 Mon Sep 17 00:00:00 2001 From: Zhang Qilong zhangqilong3@huawei.com Date: Mon, 26 Sep 2022 16:44:56 +0800 Subject: [PATCH] mtd: rawnand: tegra: Fix PM disable depth imbalance in probe
The pm_runtime_enable will increase power disable depth. Thus a pairing decrement is needed on the error handling path to keep it balanced according to context.
Cc: stable@vger.kernel.org Fixes: d7d9f8ec77fe9 ("mtd: rawnand: add NVIDIA Tegra NAND Flash controller driver") Signed-off-by: Zhang Qilong zhangqilong3@huawei.com Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Link: https://lore.kernel.org/linux-mtd/20220926084456.98160-1-zhangqilong3@huawei...
diff --git a/drivers/mtd/nand/raw/tegra_nand.c b/drivers/mtd/nand/raw/tegra_nand.c index e12f9f580a15..a9b9031ce616 100644 --- a/drivers/mtd/nand/raw/tegra_nand.c +++ b/drivers/mtd/nand/raw/tegra_nand.c @@ -1181,7 +1181,7 @@ static int tegra_nand_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); err = pm_runtime_resume_and_get(&pdev->dev); if (err) - return err; + goto err_dis_pm;
err = reset_control_reset(rst); if (err) { @@ -1215,6 +1215,8 @@ static int tegra_nand_probe(struct platform_device *pdev) err_put_pm: pm_runtime_put_sync_suspend(ctrl->dev); pm_runtime_force_suspend(ctrl->dev); +err_dis_pm: + pm_runtime_disable(&pdev->dev); return err; }