[PATCH AUTOSEL 5.10 09/25] PCI: rcar: Fix runtime PM imbalance in rcar_pcie_ep_probe()
From: Sasha Levin <sashal@kernel.org>
Date: 2021-09-11 13:17:40
Also in:
linux-pci, linux-renesas-soc, lkml
Subsystem:
pci driver for renesas r-car, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Marek Vasut, Yoshihiro Shimoda, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Linus Torvalds
From: Dinghao Liu <redacted> [ 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@zju.edu.cn (local) Signed-off-by: Dinghao Liu <redacted> Signed-off-by: Lorenzo Pieralisi <redacted> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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