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Message-ID: <809ad38b6aca8e828db7be6423cb03ac9208fb5a.camel@intel.com>
Date:   Wed, 28 Aug 2019 16:41:45 +0000
From:   "Derrick, Jonathan" <jonathan.derrick@...el.com>
To:     "hch@....de" <hch@....de>, "kbusch@...nel.org" <kbusch@...nel.org>
CC:     "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "joro@...tes.org" <joro@...tes.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "dwmw2@...radead.org" <dwmw2@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/5] x86/pci: Add a to_pci_sysdata helper

On Wed, 2019-08-28 at 16:14 +0200, Christoph Hellwig wrote:
> Various helpers need the pci_sysdata just to dereference a single field
> in it.  Add a little helper that returns the properly typed sysdata
> pointer to require a little less boilerplate code.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  arch/x86/include/asm/pci.h | 28 +++++++++++++---------------
>  1 file changed, 13 insertions(+), 15 deletions(-)
> 
> diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
> index 6fa846920f5f..75fe28492290 100644
> --- a/arch/x86/include/asm/pci.h
> +++ b/arch/x86/include/asm/pci.h
> @@ -35,12 +35,15 @@ extern int noioapicreroute;
>  
>  #ifdef CONFIG_PCI
>  
> +static inline struct pci_sysdata *to_pci_sysdata(struct pci_bus *bus)
Can you make the argument const to avoid all the warnings from callers
passing const struct pci_bus

snip

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