Re: [PATCH] PCI: mvebu: Fix merge conflicts in commit 91a8d79fc797

From: Bjorn Helgaas <helgaas@kernel.org>
To: "Pali Rohár" <pali@kernel.org>
Cc: "Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Jan Palus" <jpalus@fastmail.com>,
	"Marek Behún" <kabel@kernel.org>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Thorsten Leemhuis" <regressions@leemhuis.info>
Subject: Re: [PATCH] PCI: mvebu: Fix merge conflicts in commit 91a8d79fc797
Date: Mon, 14 Feb 2022 09:46:28 -0600	[thread overview]
Message-ID: <20220214154628.GA8830@bhelgaas> (raw)
In-Reply-To: <20220214110228.25825-1-pali@kernel.org>

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@kernel.org
> [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@fastmail.com>
> Signed-off-by: Pali Rohár <pali@kernel.org>

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@kernel.org>
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@kernel.org
    [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@kernel.org
    Link: https://lore.kernel.org/r/20220127234917.GA150851@bhelgaas
    Reported-by: Jan Palus <jpalus@fastmail.com>
    Signed-off-by: Pali Rohár <pali@kernel.org>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

> ---
>  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
> 