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PCI: tegra: Fix runtime PM imbalance in pex_ep_event_pex_rst_deassert()

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[ Upstream commit 5859c926d1f052ee61b5815b14658875c14f6243 ]

pm_runtime_get_sync() will increase the runtime PM counter
even it returns an error. Thus a pairing decrement is needed
to prevent refcount leak. Fix this by replacing this API with
pm_runtime_resume_and_get(), which will not change the runtime
PM counter on error.

Link: https://lore.kernel.org/r/20210408072700.15791-1-dinghao.liu@zju.edu.cn
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dinghao Liu 2021-04-08 15:26:58 +08:00 committed by Greg Kroah-Hartman
parent dd6ba896ff
commit 4800a98bcf
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/controller/dwc/pcie-tegra194.c
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@ -1660,7 +1660,7 @@ static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie)
if (pcie->ep_state == EP_STATE_ENABLED)
return;
ret = pm_runtime_get_sync(dev);
ret = pm_runtime_resume_and_get(dev);
if (ret < 0) {
dev_err(dev, "Failed to get runtime sync for PCIe dev: %d\n",
ret);