From: Miaoqian Lin linmq006@gmail.com
stable inclusion from stable-v5.10.137 commit cdf92a0aee97b6e8c92db99ae4cdf250dffe6692 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit e8fbd344a5ea62663554b8546b6bf9f88b93785a ]
pm_runtime_enable() will increase power disable depth. If dw_pcie_ep_init() fails, we should use pm_runtime_disable() to balance it with 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") Link: https://lore.kernel.org/r/20220602031910.55859-1-linmq006@gmail.com Signed-off-by: Miaoqian Lin linmq006@gmail.com Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Vidya Sagar vidyas@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Wei Li liwei391@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 a5b677ec0769..845f1e1de3ab 100644 --- a/drivers/pci/controller/dwc/pcie-tegra194.c +++ b/drivers/pci/controller/dwc/pcie-tegra194.c @@ -1970,6 +1970,7 @@ static int tegra_pcie_config_ep(struct tegra_pcie_dw *pcie, if (ret) { dev_err(dev, "Failed to initialize DWC Endpoint subsystem: %d\n", ret); + pm_runtime_disable(dev); return ret; }