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

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Message-ID: <2606282.lG9qK7uBW0@wuerfel>
Date:	Fri, 13 May 2016 23:01:11 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Bjorn Andersson <bjorn.andersson@...aro.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	David Miller <davem@...emloft.net>,
	Andy Gross <andy.gross@...aro.org>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	Olof Johansson <olof@...om.net>
Subject: Re: linux-next: build failure after merge of the net-next tree

On Tuesday 10 May 2016 11:39:34 Bjorn Andersson wrote:
> On Mon 09 May 18:29 PDT 2016, Stephen Rothwell wrote:
> 
> > Hi all,
> > 
> > After merging the net-next tree, today's linux-next build (x86_64
> > allmodconfig) failed like this:
> > 
> > net/qrtr/smd.c:106:14: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
> >   .callback = qcom_smd_qrtr_callback,
> >               ^
> > net/qrtr/smd.c:106:14: note: (near initialization for 'qcom_smd_qrtr_driver.callback')
> > 
> > Caused by commit
> > 
> >   bdabad3e363d ("net: Add Qualcomm IPC router")
> > 
> > interacting with commit
> > 
> >   b853cb9628bf ("soc: qcom: smd: Make callback pass channel reference")
> > 
> > from the arm-soc tree.
> > 
> > I added the following merge fix patch (and it turned out I needed the
> > new stubs).
> > 
> 
> Sorry for not spotting this issue earlier, I missed Andy's second pull
> request towards arm-soc and thought the SMD changes missed this cycle.
> 
> 
> Your patch looks good, but I'm not sure how we should approach the merge
> window; Andy can't pick the patch because he doesn't have the qrtr code
> and David doesn't have the SMD patches coming through Andy.
> 
> FWIW, Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> 
> 
> I assume we could have the QRTR go through Andy and arm-soc, with
> David's approval and this fix squashed in. But we're running rather late
> in this cycle, perhaps we should just back the QRTR patches out and I
> can respin and resend them after the merge window (for v4.8 instead)?

I'd suggest you do a merge of next-next with the qcom/soc-2 branch that
we have in arm-soc and resolve the conflict in the merge, then send
a pull request with the merge to davem.

Alternatively, in case Linus merges net-next before we get that fix
in, I could send Stephen's fix to Linus along with the pull requests.

	Arnd