On Mon, Feb 14, 2022 at 12:02:28PM +0100, Pali Rohár wrote:
> Commit 91a8d79fc797 ("PCI: mvebu: Fix configuring secondary bus of PCIe
> Root Port via emulated bridge") was incorrectly applied from mailing list
> patch [1] to the linux git repository [2] probably due to resolving merge
> conflicts incorrectly. Fix it now.
>
> [1] - https://lore.kernel.org/r/20211125124605.25915-12-pali@xxxxxxxxxx
> [2] - https://git.kernel.org/linus/91a8d79fc797
>
> Fixes: 91a8d79fc797 ("PCI: mvebu: Fix configuring secondary bus of PCIe Root Port via emulated bridge")
> BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215540
> Reported-by: Jan Palus <jpalus@xxxxxxxxxxxx>
> Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Applied to for-linus for v5.17 with the following commit log, thanks!
commit c49ae619905e ("PCI: mvebu: Fix device enumeration regression")
Author: Pali Rohár <pali@xxxxxxxxxx>
Date: Mon Feb 14 12:02:28 2022 +0100
PCI: mvebu: Fix device enumeration regression
Jan reported that on Turris Omnia (Armada 385), no PCIe devices were
detected after upgrading from v5.16.1 to v5.16.3 and identified the cause
as the backport of 91a8d79fc797 ("PCI: mvebu: Fix configuring secondary bus
of PCIe Root Port via emulated bridge"), which appeared in v5.17-rc1.
91a8d79fc797 was incorrectly applied from mailing list patch [1] to the
linux git repository [2] probably due to resolving merge conflicts
incorrectly. Fix it now.
[1] https://lore.kernel.org/r/20211125124605.25915-12-pali@xxxxxxxxxx
[2] https://git.kernel.org/linus/91a8d79fc797
[bhelgaas: commit log]
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215540
Fixes: 91a8d79fc797 ("PCI: mvebu: Fix configuring secondary bus of PCIe Root Port via emulated bridge")
Link: https://lore.kernel.org/r/20220214110228.25825-1-pali@xxxxxxxxxx
Link: https://lore.kernel.org/r/20220127234917.GA150851@bhelgaas
Reported-by: Jan Palus <jpalus@xxxxxxxxxxxx>
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> ---
> drivers/pci/controller/pci-mvebu.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
> index 71258ea3d35f..f8e82c5e2d87 100644
> --- a/drivers/pci/controller/pci-mvebu.c
> +++ b/drivers/pci/controller/pci-mvebu.c
> @@ -1329,7 +1329,8 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
> * indirectly via kernel emulated PCI bridge driver.
> */
> mvebu_pcie_setup_hw(port);
> - mvebu_pcie_set_local_dev_nr(port, 0);
> + mvebu_pcie_set_local_dev_nr(port, 1);
> + mvebu_pcie_set_local_bus_nr(port, 0);
> }
>
> pcie->nports = i;
> --
> 2.20.1
>
