From: Miaoqian Lin <linmq006@gmail.com>
To: "Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Vidya Sagar" <vidyas@nvidia.com>,
"Om Prakash Singh" <omp@nvidia.com>,
"Fan Fei" <ffclaire1224@gmail.com>,
"Miaoqian Lin" <linmq006@gmail.com>,
linux-pci@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] PCI: tegra194: Fix PM error handling in tegra_pcie_config_ep
Date: Thu, 2 Jun 2022 07:19:08 +0400 [thread overview]
Message-ID: <20220602031910.55859-1-linmq006@gmail.com> (raw)
The pm_runtime_enable() will increase power disable depth.
if dw_pcie_ep_init() fails, we should use pm_runtime_disable()
to balance it pm_runtime_enable().
Add missing pm_runtime_disable() for tegra_pcie_config_ep()
Fixes: c57247f940e8 ("PCI: tegra: Add support for PCIe endpoint mode in Tegra194")
Signed-off-by: Miaoqian Lin <linmq006@gmail.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 cc2678490162..d992371a36e6 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1949,6 +1949,7 @@ static int tegra_pcie_config_ep(struct tegra194_pcie *pcie,
if (ret) {
dev_err(dev, "Failed to initialize DWC Endpoint subsystem: %d\n",
ret);
+ pm_runtime_disable(dev);
return ret;
}
--
2.25.1
next reply other threads:[~2022-06-02 3:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 3:19 Miaoqian Lin [this message]
2022-06-02 11:34 ` [PATCH] PCI: tegra194: Fix PM error handling in tegra_pcie_config_ep Vidya Sagar
2022-06-08 21:18 ` Bjorn Helgaas
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