linux-kernel - Re: linux-next: build failure in the staging tree (Was: kisskb: FAILED linux-next/s390-allmodconfig/s390x Mon Jul 31, 17:24)

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Date:   Mon, 7 Aug 2017 10:22:08 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Laurentiu Tudor <laurentiu.tudor@....com>,
        Greg KH <gregkh@...uxfoundation.org>
Cc:     "heiko.carstens@...ibm.com" <heiko.carstens@...ibm.com>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure in the staging tree (Was: kisskb:
 FAILED linux-next/s390-allmodconfig/s390x Mon Jul 31, 17:24)

Hi all,

On Tue, 1 Aug 2017 08:29:31 +0000 Laurentiu Tudor <laurentiu.tudor@....com> wrote:
>
> On 07/31/2017 06:58 PM, Greg KH wrote:
> > On Mon, Jul 31, 2017 at 09:55:14AM +0000, Laurentiu Tudor wrote:  
> >> Hi Stephen,
> >>
> >> That's because the fsl-mc driver selects GENERIC_MSI_IRQ_DOMAIN and not
> >> all arches implement the support for the option. I can submit a patch
> >> that adds explicit dependencies on arches that it was build-tested (x86,
> >> arm, powerpc, all both 32 and 64 bits) similar to how it's done here
> >> [1]. Let me know if you're ok with this fix and i'll submit the fix to
> >> staging.  
> >
> > Ugh, you should not be selecting that option, but rather depending on
> > the option, right?  
> 
> All users in the kernel use "select", so i don't think so. An 
> interesting use that adds explicit dependencies on architectures can be
> seen here [1], in the generic code. I've proposed a patch [2] that does 
> a similar thing for mc-bus. I think it's a good approach as it keeps 
> things under control by explicitly specifying the architectures on which
> the driver was compile-tested.
> 
> ---
> Best Regards, Laurentiu
> 
> [1] 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/pci/Kconfig#n28
> [2] https://patchwork.kernel.org/patch/9871861/

Any resolution of this?
-- 
Cheers,
Stephen Rothwell