linux-kernel - Re: linux-next: build failure after merge of the net tree

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Date:   Fri, 21 Oct 2016 11:43:34 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>, linux-next@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: linux-next: build failure after merge of the net tree

Hi Florian,

On Thu, 20 Oct 2016 17:30:33 -0700 Florian Fainelli <f.fainelli@...il.com> wrote:
>
> On 10/20/2016 03:42 PM, Florian Fainelli wrote:
> > On 10/20/2016 03:27 PM, Stephen Rothwell wrote:  
> >>
> >> After merging the net tree, today's linux-next build (arm
> >> multi_v7_defconfig) failed like this:
> >>
> >> ERROR: "kexec_in_progress" [drivers/net/dsa/bcm_sf2.ko] undefined!
> >>
> >> Caused by commit
> >>
> >>   2399d6143f85 ("net: dsa: bcm_sf2: Prevent GPHY shutdown for kexec'd kernels")
> >>
> >> I used the version of the net tree from next-20161020 for today.  
> > 
> > OK, seems like we need an ifdef CONFIG_KEXEC_CORE, let me fix that.
> > Thanks Stephen!  
> 
> Stephen, can you send me the .config file? I could not reproduce it with
> next-20161020 and doing a make multi_v7_defconfig:

This only started with the net tree as of today (HEAD a681574c99be).
The problem is simply that kexec_in_progress is not exported to modules.

Sorry, getting the actual .config file is a pain at this point since my
builds have moved on.

It probably had (the current .config has):

CONFIG_NET_DSA_BCM_SF2=m
CONFIG_KEXEC_CORE=y

If CONFIG_KEXEC_CORE is not set, then kexec_in_progress is defined to false.

-- 
Cheers,
Stephen Rothwell