linux-kernel - Re: [PATCH] pci: Rename pcibios_add

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Date:   Wed, 15 Sep 2021 12:13:56 +0200
From:   Niklas Schnelle <schnelle@...ux.ibm.com>
To:     "Oliver O'Halloran" <oohall@...il.com>,
        Michal Simek <monstr@...str.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        "David S. Miller" <davem@...emloft.net>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-pci@...r.kernel.org
Subject: Re: [PATCH] pci: Rename pcibios_add_device to match

On Tue, 2021-09-14 at 01:27 +1000, Oliver O'Halloran wrote:
> The general convention for pcibios_* hooks is that they're named after
> the corresponding pci_* function they provide a hook for. The exception
> is pcibios_add_device() which provides a hook for pci_device_add(). This
> has been irritating me for years so rename it.
> 
> Also, remove the export of the microblaze version. The only caller
> must be compiled as a built-in so there's no reason for the export.
> 
> Signed-off-by: Oliver O'Halloran <oohall@...il.com>
> ---
>  arch/microblaze/pci/pci-common.c           | 3 +--
>  arch/powerpc/kernel/pci-common.c           | 2 +-
>  arch/powerpc/platforms/powernv/pci-sriov.c | 2 +-
>  arch/s390/pci/pci.c                        | 2 +-
>  arch/sparc/kernel/pci.c                    | 2 +-
>  arch/x86/pci/common.c                      | 2 +-
>  drivers/pci/pci.c                          | 4 ++--
>  drivers/pci/probe.c                        | 4 ++--
>  include/linux/pci.h                        | 2 +-
>  9 files changed, 11 insertions(+), 12 deletions(-)
> 
> 
.. snip ..
> diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
> index e7e6788d75a8..ded3321b7208 100644
> --- a/arch/s390/pci/pci.c
> +++ b/arch/s390/pci/pci.c
> @@ -561,7 +561,7 @@ static void zpci_cleanup_bus_resources(struct zpci_dev *zdev)
>  	zdev->has_resources = 0;
>  }
>  
> -int pcibios_add_device(struct pci_dev *pdev)
> +int pcibios_device_add(struct pci_dev *pdev)
>  {
>  	struct zpci_dev *zdev = to_zpci(pdev);
>  	struct resource *res;
> 
.. snip ..
>


I agree with your assesment this is indeed confusing. Interestingly
pcibios_release_device() also doesn't follow the convention exactly as
it is called from pci_release_dev() but at least that isn't very
confusing.

So for the arch/s390/pci bit:

Acked-by: Niklas Schnelle <schnelle@...ux.ibm.com>