linux-kernel - Re: linux-next: manual merge of the char-misc tree with the char-misc.current tree

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Date:   Mon, 10 Dec 2018 10:47:07 +0100
From:   Greg KH <greg@...ah.com>
To:     Dexuan Cui <decui@...rosoft.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        KY Srinivasan <kys@...rosoft.com>
Subject: Re: linux-next: manual merge of the char-misc tree with the
 char-misc.current tree

On Tue, Dec 04, 2018 at 08:46:41AM +0000, Dexuan Cui wrote:
> > From: Greg KH <greg@...ah.com>
> > Sent: Monday, December 3, 2018 11:43 PM
> > On Tue, Dec 04, 2018 at 03:35:13PM +1100, Stephen Rothwell wrote:
> > > Hi all,
> > >
> > > Today's linux-next merge of the char-misc tree got a conflict in:
> > >
> > >   drivers/hv/channel_mgmt.c
> > >
> > > between commit:
> > >
> > >   37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to
> > two workqueues")
> > >
> > > from the char-misc.current tree and commit:
> > >
> > >   4d3c5c69191f ("Drivers: hv: vmbus: Remove the useless API
> > vmbus_get_outgoing_channel()")
> > >
> > > from the char-misc tree.
> > >
> > > I fixed it up (I used the former version where they conflicted) and can
> > > carry the fix as necessary. This is now fixed as far as linux-next is
> Hi Stephen, 
> Thank you! I can confirm your rebase for next-20181204 is correct:
> 37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to two workqueues")
> 
> > > 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.
> > 
> > Yeah, this is a mess, I'll wait for the hyper-v developers to send me a
> > fixup patch for handling this merge issue, as they know it is happening
> > :(
> > 
> > greg k-h
> 
> Since Stephen has fixed the merge issue correctly, I guess I may not need to send a fixup
> patch for linux-next.git. If I didn't get it right, please let me know which tree/branch I
> should work on to send a fixup patch.
> 
> It looks the conflict here happened because the two related patches, which modify
> the same functions, went into different branches of char-misc.git. I didn't realize this
> could happen... Sorry. The lesson I learnt is that I should not submit an urgent fix
> with an unimportant clean-up patch at the same time, when they can cause a conflict.

I have done the merge in my char-misc-next branch, can you verify that I
got it correct?

thanks,

greg k-h