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From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: Tadeusz Struk <tadeusz.struk@intel.com>,
	Randy Dunlap <rdunlap@infradead.org>,
	linux-next list <linux-next@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	linux-pci <linux-pci@vger.kernel.org>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Michal Marek <mmarek@suse.cz>,
	"Yann E. MORIN" <yann.morin.1998@free.fr>,
	linux-kbuild <linux-kbuild@vger.kernel.org>
Subject: Re: linux-next: Tree for Aug 12 (include/linux/pci.h)
Date: Thu, 20 Aug 2015 16:18:49 +1000	[thread overview]
Message-ID: <20150820161849.79552437@canb.auug.org.au> (raw)
In-Reply-To: <CAErSpo4+H6AJs9shVGN8fm9=GwPL9EzNcyMNt5FW81JGEA1sDA@mail.gmail.com>

Hi Bjorn,

On Wed, 19 Aug 2015 23:16:06 -0700 Bjorn Helgaas <bhelgaas@google.com> wrote:
>
> [+cc Yann, linux-kbuild]
> 
> On Wed, Aug 12, 2015 at 3:58 PM, Tadeusz Struk <tadeusz.struk@intel.com> wrote:
> > On 08/12/2015 02:53 PM, Stephen Rothwell wrote:
> >> On Wed, 12 Aug 2015 11:05:36 -0700 Randy Dunlap <rdunlap@infradead.org> wrote:
> >>> >
> >>> > on i386 or x86_64:
> >>> >
> >>> > Many (repeated) errors like this one:
> >>> >
> >>> > ../include/linux/pci.h:390:12: error: ‘struct pci_dev’ has no member named ‘physfn’
> >>> >
> >>> > when CONFIG_PCI_ATS is not enabled.
> >> Maybe caused by commit
> >>
> >>   dd0f368398ea ("crypto: qat - Add qat dh895xcc VF driver")
> >>
> >> from the crypto tree Which adds a
> >>
> >>   select PCI_IOV
> >>
> >> to drivers/crypto/qat/Kconfig without the necessary
> >>
> >>   select PCI
> >>
> >> but PCI_IOV selects PCI_ATS, so I am not sure what happened here.  I am
> >> assuming that your config has PCI_IOV enabled?  What about PCI?
> >
> > There is a patch submitted, but not yet applied
> > https://patchwork.kernel.org/patch/6994171/
> > maybe it will help?
> 
> I don't understand this.  In drivers/pci/Kconfig, we have:
> 
>   config PCI_IOV
>     depends on PCI
> 
> and in drivers/crypto/qat/Kconfig, dd0f368398ea adds:
> 
>   config CRYPTO_DEV_QAT_DH895xCCVF
>     select PCI_IOV
> 
> And apparently it's possible to end up with a .config with
> CONFIG_PCI_IOV=y but CONFIG_PCI is not set?  That seems wrong, since
> we declared that PCI_IOV depends on PCI.  Does select ignore that
> dependency somehow?

Yeah, unfortunately that is how select works.  If a symbol you select
depends on anything, then you need to also select all the dependencies.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

  reply	other threads:[~2015-08-20  6:18 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-12 13:39 linux-next: Tree for Aug 12 Stephen Rothwell
2015-08-12 18:05 ` linux-next: Tree for Aug 12 (include/linux/pci.h) Randy Dunlap
2015-08-12 21:53   ` Stephen Rothwell
2015-08-12 22:58     ` Tadeusz Struk
2015-08-13  0:16       ` Randy Dunlap
2015-08-13  0:49         ` Stephen Rothwell
2015-08-20  6:16       ` Bjorn Helgaas
2015-08-20  6:18         ` Stephen Rothwell [this message]
2015-08-12 23:22     ` Randy Dunlap

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