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| author | Dinghao Liu <dinghao.liu@zju.edu.cn> | 2021-04-08 10:26:58 +0300 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2021-04-08 20:10:35 +0300 |
| commit | 5859c926d1f052ee61b5815b14658875c14f6243 (patch) | |
| tree | 490e0ce687f89d64a10fc59237f005157ecb020e /drivers/pci/controller/dwc | |
| parent | 10739e2a5e83ecac6a7d2422369c5fe8a1a72b04 (diff) | |
| download | linux-5859c926d1f052ee61b5815b14658875c14f6243.tar.xz | |
PCI: tegra: Fix runtime PM imbalance in pex_ep_event_pex_rst_deassert()
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>
Diffstat (limited to 'drivers/pci/controller/dwc')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-tegra194.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c index 18acd48e8e9b..9b6799258fa4 100644 --- a/drivers/pci/controller/dwc/pcie-tegra194.c +++ b/drivers/pci/controller/dwc/pcie-tegra194.c @@ -1645,7 +1645,7 @@ 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); |