linux-kernel - Re: [PATCH] PCI: rcar-ep: Include linux/pci-epf.h instead of linux/pci-epc.h

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Date:   Wed, 5 Jul 2023 21:57:30 +1000
From:   Alistair Francis <alistair23@...il.com>
To:     Krzysztof Wilczyński <kw@...ux.com>
Cc:     Damien Le Moal <dlemoal@...nel.org>,
        Alistair Francis <alistair@...stair23.me>,
        marek.vasut+renesas@...il.com, yoshihiro.shimoda.uh@...esas.com,
        linux-pci@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org, lpieralisi@...nel.org,
        robh@...nel.org, bhelgaas@...gle.com
Subject: Re: [PATCH] PCI: rcar-ep: Include linux/pci-epf.h instead of linux/pci-epc.h

On Wed, Jul 5, 2023 at 9:44 PM Krzysztof Wilczyński <kw@...ux.com> wrote:
>
> Hello,
>
> > > pci-epc.h doesn't define the members of the pci_epf_header struct, so
> > > trying to access them results in errors like this:
> > >
> > >     error: invalid use of undefined type 'struct pci_epf_header'
> > >       167 |                 val = hdr->vendorid;
> > >
> > > Instead let's include pci-epf.h which not only defines the
> > > pci_epf_header but also includes pci-epc.h.
>
> [...]
> > It is odd that the the build bot did not detect this...
>
> This is a bit of a surprise to me too, especially since none of the usual
> bots pick this up, and I can't seem to find such a failure in the nightly
> CI logs either.
>
> Alistair, how did you stumble into this issue?  Also, which version or
> a tree would that be?

I was building the kernel with this defconfig [1] inside OpenEmbedded.
It was the 6.4-rc7 kernel, specifically this one [2].

1: https://github.com/damien-lemoal/buildroot/blob/rockpro64_ep_v23/board/pine64/rockpro64_ep/linux.config
2: https://github.com/damien-lemoal/linux/tree/rockpro64_ep_v23

Alistair

>
>   Thank you!
>
>         Krzysztof