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    Subject[PATCH 5.15 406/779] PCI: tegra194: Fix PM error handling in tegra_pcie_config_ep()
    Date
    From: Miaoqian Lin <linmq006@gmail.com>

    [ 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>
    ---
    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 904976913081..98da2578e4db 100644
    --- a/drivers/pci/controller/dwc/pcie-tegra194.c
    +++ b/drivers/pci/controller/dwc/pcie-tegra194.c
    @@ -1951,6 +1951,7 @@ 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;
    }

    --
    2.35.1


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