linux-kernel - Re: linux-next: manual merge of the drivers-x86 tree with the watchdog tree

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Date:   Tue, 2 May 2017 12:12:17 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Darren Hart <dvhart@...radead.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Wim Van Sebroeck <wim@...ana.be>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Subject: Re: linux-next: manual merge of the drivers-x86 tree with the
 watchdog tree

On Tue, May 02, 2017 at 11:09:40AM -0700, Darren Hart wrote:
> On Tue, May 02, 2017 at 02:04:03PM +1000, Stephen Rothwell wrote:
> > Hi all,
> > 
> > Today's linux-next merge of the drivers-x86 tree got a conflict in:
> > 
> >   drivers/watchdog/iTCO_wdt.c
> > 
> > between commit:
> > 
> >   38a700fa1df9 ("watchdog: iTCO_wdt: cleanup set/unset no_reboot_bit functions")
> > (which also appears in the drivers-x86 tree as commit f583a884afec)
> > 
> 
> Andy and Guenter, I presume the two of you discussed how this patch would get
> submitted as I see the following in the platform driver x86 for-next branch:
> 
>     Acked-by: Guenter Roeck <linux@...ck-us.net>
>     Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> 
> for both:
> 
> 140c91b2 watchdog: iTCO_wdt: Add PMC specific noreboot update api
> f583a88 watchdog: iTCO_wdt: cleanup set/unset no_reboot_bit functions
> 

I did not expect f583a88/38a700fa1df9 to show up in some other tree, sorry.
I don't recall discussing how to handle it either, though my memory may defeat
me. If so, my apologies.

> This suggests these were deliberately added to our tree and not accidentally
> included through a rebase without --preserve-merges or something like that.
> 
> Guenter, if you prefer/need to submit this through your tree, can you provide
> us with an immutable branch to merge for the dependencies of our later patches?
> If you can drop these two patches without a dependency problem in your tree,
> that would be the cleanest solution as we could avoid an additional merge.
> 

Please check with Wim.

Thanks,
Guenter

> Thanks,
> 
> Darren
> 
> 
> 
> > from the watchdog tree and commit:
> > 
> >   140c91b26ebc ("watchdog: iTCO_wdt: Add PMC specific noreboot update api")
> > 
> > from the drivers-x86 tree.
> > 
> > I fixed it up and can carry the fix as necessary. This is now fixed as
> > far as linux-next is concerned, but any non trivial conflicts should be
> > mentioned to your upstream maintainer when your tree is submitted for
> > merging.  You may also want to consider cooperating with the maintainer
> > of the conflicting tree to minimise any particularly complex conflicts.
> > 
> > -- 
> > Cheers,
> > Stephen Rothwell
> > 
> 
> -- 
> Darren Hart
> VMware Open Source Technology Center