[PATCH] [v2] PCI: tegra: Fix runtime PM imbalance on error

[Dinghao Liu]

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.

Also, call pm_runtime_disable() when pm_runtime_get_sync() returns
an error code.

Signed-off-by: Dinghao Liu <dinghao....@zju.edu.cn>
---
 drivers/pci/controller/pci-tegra.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/pci/controller/pci-tegra.c 
b/drivers/pci/controller/pci-tegra.c
index 3e64ba6a36a8..00236dd65b5b 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -2712,7 +2712,7 @@ static int tegra_pcie_probe(struct platform_device *pdev)
        err = pm_runtime_get_sync(pcie->dev);
        if (err < 0) {
                dev_err(dev, "fail to enable pcie controller: %d\n", err);
-               goto teardown_msi;
+               goto pm_runtime_put;
        }
 
        host->busnr = bus->start;
@@ -2746,7 +2746,6 @@ static int tegra_pcie_probe(struct platform_device *pdev)
 pm_runtime_put:
        pm_runtime_put_sync(pcie->dev);
        pm_runtime_disable(pcie->dev);
-teardown_msi:
        tegra_pcie_msi_teardown(pcie);
 put_resources:
        tegra_pcie_put_resources(pcie);
-- 
2.17.1