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PCI: rcar: Fix runtime PM imbalance on error 

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

Link: https://lore.kernel.org/r/20200709064356.8800-1-dinghao.liu@zju.edu.cn
Fixes: 0df6150e7c ("PCI: rcar: Use runtime PM to control controller clock")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
This commit is contained in:
Dinghao Liu 2020-07-09 14:43:56 +08:00 committed by Lorenzo Pieralisi
parent cb52a40202
commit a68e06e729
1 changed files with 1 additions and 3 deletions
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4
drivers/pci/controller/pcie-rcar-host.c
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@ -986,7 +986,7 @@ static int rcar_pcie_probe(struct platform_device *pdev)
err = pm_runtime_get_sync(pcie->dev); err = pm_runtime_get_sync(pcie->dev);
if (err < 0) { if (err < 0) {
dev_err(pcie->dev, "pm_runtime_get_sync failed\n"); dev_err(pcie->dev, "pm_runtime_get_sync failed\n");
goto err_pm_disable; goto err_pm_put;
} }
err = rcar_pcie_get_resources(host); err = rcar_pcie_get_resources(host);
@ -1057,8 +1057,6 @@ static int rcar_pcie_probe(struct platform_device *pdev)
err_pm_put: err_pm_put:
pm_runtime_put(dev); pm_runtime_put(dev);
err_pm_disable:
pm_runtime_disable(dev); pm_runtime_disable(dev);
pci_free_resource_list(&host->resources); pci_free_resource_list(&host->resources);