linux-kernel - Re: [PATCH v4 4/8] PCI: Replace dev_node parameter of of_pci_get_host_bridge

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Date:   Tue, 29 May 2018 08:20:15 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Jan Kiszka <jan.kiszka@...mens.com>
Cc:     Vladimir Zapolskiy <vladimir_zapolskiy@...tor.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Jingoo Han <jingoohan1@...il.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: Re: [PATCH v4 4/8] PCI: Replace dev_node parameter of
 of_pci_get_host_bridge_resources with device

On Mon, May 28, 2018 at 12:46:35PM +0200, Jan Kiszka wrote:
> On 2018-05-28 12:00, Vladimir Zapolskiy wrote:
> > Hi Jan, Bjorn,
> > 
> > On 05/15/2018 12:07 PM, Jan Kiszka wrote:
> >> From: Jan Kiszka <jan.kiszka@...mens.com>
> >>
> >> Another step towards a managed version of
> >> of_pci_get_host_bridge_resources(): Feed in the underlying device,
> >> rather than just the OF node. This will allow to use managed resource
> >> allocation internally later on.
> >>
> >> CC: Jingoo Han <jingoohan1@...il.com>
> >> CC: Joao Pinto <Joao.Pinto@...opsys.com>
> >> CC: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> >> Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
> > 
> > [snip]
> > 
> >> diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c
> >> index a6af62e0256d..61802e55a00c 100644
> >> --- a/drivers/pci/host/pcie-altera.c
> >> +++ b/drivers/pci/host/pcie-altera.c
> >> @@ -488,11 +488,10 @@ static int altera_pcie_parse_request_of_pci_ranges(struct altera_pcie *pcie)
> >>  {
> >>  	int err, res_valid = 0;
> >>  	struct device *dev = &pcie->pdev->dev;
> >> -	struct device_node *np = dev->of_node;
> >>  	struct resource_entry *win;
> >>  
> >> -	err = of_pci_get_host_bridge_resources(np, 0, 0xff, &pcie->resources,
> >> -					       NULL);
> >> +	err = of_pci_get_host_bridge_resources(dev, 0, 0xff
> >> +						    &pcie->resources, NULL);
> >>  	if (err)
> >>  		return err;
> >>  
> > 
> > In case if it is an undiscovered issue, a comma was mistakenly removed,
> > which will result it compilation error.
> > 
> > The problem is also found in pci/next , see commit 88e3909aa125.
> 
> Yes, that's known. We have a bisection breakage: The issue was fixed
> again by patch 6 in that series.

I updated 88e3909aa125 to fix the bisection issue.  I'll rebuild
pci/next later today or tomorrow.