[PATCH 5.14 099/168] PCI: rcar: Fix runtime PM imbalance in rcar_pcie_ep_probe()
From: Greg Kroah-Hartman
Date: Mon Sep 20 2021 - 14:49:23 EST
From: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
[ Upstream commit 1e29cd9983eba1b596bc07f94d81d728007f8a25 ]
pm_runtime_get_sync() will increase the runtime PM counter
even it returns an error. Thus a pairing decrement is needed
to prevent refcount leak. Fix this by replacing this API with
pm_runtime_resume_and_get(), which will not change the runtime
PM counter on error.
Link: https://lore.kernel.org/r/20210408072402.15069-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/pci/controller/pcie-rcar-ep.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/pcie-rcar-ep.c b/drivers/pci/controller/pcie-rcar-ep.c
index b4a288e24aaf..c91d85b15129 100644
--- a/drivers/pci/controller/pcie-rcar-ep.c
+++ b/drivers/pci/controller/pcie-rcar-ep.c
@@ -492,9 +492,9 @@ static int rcar_pcie_ep_probe(struct platform_device *pdev)
pcie->dev = dev;
pm_runtime_enable(dev);
- err = pm_runtime_get_sync(dev);
+ err = pm_runtime_resume_and_get(dev);
if (err < 0) {
- dev_err(dev, "pm_runtime_get_sync failed\n");
+ dev_err(dev, "pm_runtime_resume_and_get failed\n");
goto err_pm_disable;
}
--
2.30.2