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From: Zhang Qilong <zhangqilong3@huawei.com>
To: <lorenzo.pieralisi@arm.com>, <robh@kernel.org>,
	<bhelgaas@google.com>, <thierry.reding@gmail.com>,
	<jonathanh@nvidia.com>
Cc: <linux-pci@vger.kernel.org>, <linux-tegra@vger.kernel.org>
Subject: [PATCH] PCI: dwc: fix reference leak in pex_ep_event_pex_rst_deassert
Date: Mon, 2 Nov 2020 22:30:45 +0800	[thread overview]
Message-ID: <20201102143045.142121-1-zhangqilong3@huawei.com> (raw)

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in pex_ep_event_pex_rst_deassert, so we should
fix it.

Fixes: c57247f940e8e ("PCI: tegra: Add support for PCIe endpoint mode in Tegra194")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
---
 drivers/pci/controller/dwc/pcie-tegra194.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index f920e7efe118..936510b5c649 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1662,6 +1662,7 @@ static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie)
 
 	ret = pm_runtime_get_sync(dev);
 	if (ret < 0) {
+		pm_runtime_put_noidle(dev);
 		dev_err(dev, "Failed to get runtime sync for PCIe dev: %d\n",
 			ret);
 		return;
-- 
2.17.1


             reply	other threads:[~2020-11-02 14:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-02 14:30 Zhang Qilong [this message]
2020-11-03  2:52 ` [PATCH] PCI: dwc: fix reference leak in pex_ep_event_pex_rst_deassert Vidya Sagar
2020-11-03  3:14   ` 答复: " zhangqilong
2021-01-25 16:34     ` Lorenzo Pieralisi
2021-01-27  6:19       ` Vidya Sagar
2021-01-25 19:30   ` Jon Hunter
2021-03-23 10:24     ` Lorenzo Pieralisi

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