Messages in this thread | | | Subject | Re: [PATCH V2 4/5] PCI: tegra: Don't allow suspend when Tegra PCIe is in EP mode | From | Vidya Sagar <> | Date | Tue, 8 Jun 2021 16:08:22 +0530 |
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On 6/6/2021 1:52 PM, Om Prakash Singh wrote: > When Tegra PCIe is in endpoint mode it should be available for root port. > PCIe link up by root port fails if it is in suspend state. So, don't allow > Tegra to suspend when endpoint mode is enabled. > > Signed-off-by: Om Prakash Singh <omp@nvidia.com> > --- > > Changes in V2: > - Update return value and error log as per comment from Krzysztof Wilczyński > > drivers/pci/controller/dwc/pcie-tegra194.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c > index 64ec0da31b5b..ae4c0a29818d 100644 > --- a/drivers/pci/controller/dwc/pcie-tegra194.c > +++ b/drivers/pci/controller/dwc/pcie-tegra194.c > @@ -2276,6 +2276,11 @@ static int tegra_pcie_dw_suspend_late(struct device *dev) > struct tegra_pcie_dw *pcie = dev_get_drvdata(dev); > u32 val; > > + if (pcie->mode == DW_PCIE_EP_TYPE) { > + dev_err(dev, "Suspend is not supported in EP mode"); > + return -ENOTSUPP; > + } > + > if (!pcie->link_state) > return 0; > > Acked-by: Vidya Sagar <vidyas@nvidia.com>
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