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    Subject[PATCH 5.19 0848/1157] PCI: tegra194: Fix link up retry sequence
    Date
    From: Vidya Sagar <vidyas@nvidia.com>

    [ Upstream commit e05fd6ae77c3e2cc0dba283005d24b6d56d2b1fa ]

    Add the missing DLF capability offset while clearing DL_FEATURE_EXCHANGE_EN
    bit during link up retry.

    Link: https://lore.kernel.org/r/20220721142052.25971-15-vidyas@nvidia.com
    Fixes: 56e15a238d92 ("PCI: tegra: Add Tegra194 PCIe support")
    Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/pci/controller/dwc/pcie-tegra194.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
    index 0bab700086f9..67e8372a3243 100644
    --- a/drivers/pci/controller/dwc/pcie-tegra194.c
    +++ b/drivers/pci/controller/dwc/pcie-tegra194.c
    @@ -976,7 +976,7 @@ static int tegra194_pcie_start_link(struct dw_pcie *pci)
    offset = dw_pcie_find_ext_capability(pci, PCI_EXT_CAP_ID_DLF);
    val = dw_pcie_readl_dbi(pci, offset + PCI_DLF_CAP);
    val &= ~PCI_DLF_EXCHANGE_ENABLE;
    - dw_pcie_writel_dbi(pci, offset, val);
    + dw_pcie_writel_dbi(pci, offset + PCI_DLF_CAP, val);

    tegra194_pcie_host_init(pp);
    dw_pcie_setup_rc(pp);
    --
    2.35.1


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