From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Stanimir Varbanov <svarbanov@mm-sol.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Rob Herring <robh@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] [v2] PCI: qcom: Fix runtime PM imbalance on error
Date: Tue, 7 Jul 2020 13:50:00 +0800 [thread overview]
Message-ID: <20200707055000.9453-1-dinghao.liu@zju.edu.cn> (raw)
pm_runtime_get_sync() increments the runtime PM usage counter even
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@zju.edu.cn>
---
Changelog:
v2: - Remove redundant brackets.
---
drivers/pci/controller/dwc/pcie-qcom.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 138e1a2d21cc..12abdfbff5ca 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1339,10 +1339,8 @@ static int qcom_pcie_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
ret = pm_runtime_get_sync(dev);
- if (ret < 0) {
- pm_runtime_disable(dev);
- return ret;
- }
+ if (ret < 0)
+ goto err_pm_runtime_put;
pci->dev = dev;
pci->ops = &dw_pcie_ops;
--
2.17.1
next reply other threads:[~2020-07-07 5:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-07 5:50 Dinghao Liu [this message]
2020-07-07 10:36 ` [PATCH] [v2] PCI: qcom: Fix runtime PM imbalance on error Lorenzo Pieralisi
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