linux-kernel - Re: [PATCH] iommu: Drop the of_iommu_{set/get}

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Message-ID: <20170104151939.GK18193@arm.com>
Date:   Wed, 4 Jan 2017 15:19:39 +0000
From:   Will Deacon <will.deacon@....com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH] iommu: Drop the of_iommu_{set/get}_ops() interface

On Tue, Jan 03, 2017 at 05:34:56PM +0000, Lorenzo Pieralisi wrote:
> With the introduction of the new iommu_{register/get}_instance()
> interface in commit e4f10ffe4c9b ("iommu: Make of_iommu_set/get_ops() DT
> agnostic") (based on struct fwnode_handle as look-up token, so firmware
> agnostic) to register IOMMU instances with the core IOMMU layer there is
> no reason to keep the old OF based interface around any longer.
> 
> Convert all the IOMMU drivers (and OF IOMMU core code) that rely on the
> of_iommu_{set/get}_ops() to the new kernel interface to register/retrieve
> IOMMU instances and remove the of_iommu_{set/get}_ops() remaining glue
> code in order to complete the interface rework.
> 
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Cc: Matthias Brugger <matthias.bgg@...il.com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Robin Murphy <robin.murphy@....com>
> Cc: Joerg Roedel <joro@...tes.org>
> Cc: Marek Szyprowski <m.szyprowski@...sung.com>
> ---
> Exynos, msm and mtk code compile tested only owing to lack of
> test platforms, I would appreciate some help in testing this
> patch on those platforms before merging it even if it is just
> a simple interface conversion.
> 
> Thanks,
> Lorenzo
> 
>  drivers/iommu/exynos-iommu.c |  2 +-
>  drivers/iommu/msm_iommu.c    |  2 +-
>  drivers/iommu/mtk_iommu.c    |  2 +-
>  drivers/iommu/of_iommu.c     |  4 ++--
>  include/linux/of_iommu.h     | 11 -----------
>  5 files changed, 5 insertions(+), 16 deletions(-)

Thanks for following up with this cleanup, Lorenzo. I'll queue it locally,
and send it to Joerg for 4.11 if he doesn't apply it manually before then.

Will