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PCI: tegra194: Fix link up retry sequence

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[ 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: 56e15a238d ("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>
This commit is contained in:
Vidya Sagar 2022-07-21 19:50:50 +05:30 • committed by Greg Kroah-Hartman
commit 06f56d9e74
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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@ -854,7 +854,7 @@ static int tegra_pcie_dw_host_init(struct pcie_port *pp)
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);
tegra_pcie_prepare_host(pp);