linux-kernel - RE: [PATCH v6 00/12] iommu/exynos: Fixes and Enhancements of System MMU driver with DT

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Date:	Thu, 10 Jan 2013 10:34:48 -0800
From:	Kukjin Kim <kgene.kim@...sung.com>
To:	'Joerg Roedel' <joro@...tes.org>
Cc:	'Cho KyongHo' <pullip.cho@...sung.com>,
	'Linux ARM Kernel' <linux-arm-kernel@...ts.infradead.org>,
	'Linux IOMMU' <iommu@...ts.linux-foundation.org>,
	'Linux Kernel' <linux-kernel@...r.kernel.org>,
	'Linux Samsung SOC' <linux-samsung-soc@...r.kernel.org>,
	'Hyunwoong Kim' <khw0178.kim@...sung.com>,
	'Prathyush' <prathyush.k@...sung.com>,
	'Rahul Sharma' <rahul.sharma@...sung.com>,
	'Subash Patel' <supash.ramaswamy@...aro.org>
Subject: RE: [PATCH v6 00/12] iommu/exynos: Fixes and Enhancements of System
 MMU driver with DT

Kukjin Kim wrote:
> 
> 'Joerg Roedel' wrote:
> >
> > On Mon, Dec 31, 2012 at 10:18:46AM -0800, Kukjin Kim wrote:
> > > Cho KyongHo wrote:
> >
> > > > Diffstats:
> > > >  arch/arm/boot/dts/exynos5250-smdk5250.dts  |    2 +-
> > > >  arch/arm/boot/dts/exynos5250.dtsi          |   27 +-
> > > >  arch/arm/mach-exynos/Kconfig               |    5 -
> > > >  arch/arm/mach-exynos/Makefile              |    1 -
> > > >  arch/arm/mach-exynos/clock-exynos4.c       |   41 +-
> > > >  arch/arm/mach-exynos/clock-exynos4210.c    |    9 +-
> > > >  arch/arm/mach-exynos/clock-exynos4212.c    |   23 +-
> > > >  arch/arm/mach-exynos/clock-exynos5.c       |   87 +-
> > > >  arch/arm/mach-exynos/dev-sysmmu.c          |  274 ------
> > > >  arch/arm/mach-exynos/include/mach/sysmmu.h |   66 --
> > > >  arch/arm/mach-exynos/mach-exynos4-dt.c     |   34 +
> > > >  arch/arm/mach-exynos/mach-exynos5-dt.c     |   30 +
> > > >  drivers/iommu/Kconfig                      |    2 +-
> > > >  drivers/iommu/Makefile                     |    2 +-
> > > >  drivers/iommu/exynos-iommu.c               | 1477
> > +++++++++++++++++++++--
> > > > -----
> > > >  15 files changed, 1284 insertions(+), 796 deletions(-)
> > >
> > > Joerg, it's time to merge this. If you don't mind, let me pick up this
whole
> > > series into Samsung tree because this touches many Samsung stuff.
> >
> > Well, looking at the diffstat the IOMMU changes are a lot larger than
> > the exynos ones. So I think this should go through the IOMMU tree once
> > the latest review comments are fixed.
> >
> If so, too many ugly merge conflicts will be happened when Linus merges
for
> v3.9 because the legacy(current) exynos clock stuff is going away in
Samsung
> tree and as I said, this touches Samsung stuff widely. Of course, Stephen
> should complain the conflicts between your tree and mine once you apply
> this whole series in your -next before Linus' merge for v3.9. I believe,
you
> don't want it.
> 
> You know, we have several options to avoid it. When you take this series
in
> your tree, you can provide topic branch for me. Or this series should be
> separated for arch/arm/ and drivers/ for both trees, then only
> drivers/iommu changes should be picked up in your tree. I'm OK both, let
me
> know which one you would prefer or other way.
> 
Hmm, I think, just one [7/12] patch does matter so if you could create topic
branch and apply [7/12] patch firstly before other drivers/ changes would be
better to me. It's OK on both trees if I just _merge_ the first [7/12]
commit in the topic branch you provided for exynos-iommu. But you know, you
don't have to rebase it once I merge it in Samsung tree.

How about?

> BTW, KyongHo, you need to update the clock changes for exynos-iommu
> against on exynos common clock stuff.
> 
KyoungHo, your changes don't matter on exynos common clock stuff and I can
take care in my tree. So no need more work for it in your side. If any
updates, let you know.

Thanks.

- Kukjin

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