linux-kernel - Re: [RFC PATCH v2 09/15] drivers: iommu: arm-smmu-v3: split probe functions into DT/generic portions

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Message-ID: <20160614180916.GH16531@arm.com>
Date:	Tue, 14 Jun 2016 19:09:16 +0100
From:	Will Deacon <will.deacon@....com>
To:	Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:	iommu@...ts.linux-foundation.org,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Robin Murphy <robin.murphy@....com>,
	Joerg Roedel <joro@...tes.org>,
	Marc Zyngier <marc.zyngier@....com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Tomasz Nowicki <tn@...ihalf.com>, Jon Masters <jcm@...hat.com>,
	Sinan Kaya <okaya@...eaurora.org>, linux-acpi@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC PATCH v2 09/15] drivers: iommu: arm-smmu-v3: split probe
 functions into DT/generic portions

On Tue, Jun 07, 2016 at 02:31:04PM +0100, Lorenzo Pieralisi wrote:
> Current ARM SMMUv3 probe functions intermingle HW and DT probing in the
> initialization functions to detect and programme the ARM SMMU v3 driver
> features. In order to allow probing the ARM SMMUv3 with other firmwares
> than DT, this patch splits the ARM SMMUv3 init functions into DT and HW
> specific portions so that other FW interfaces (ie ACPI) can reuse the HW
> probing functions and skip the DT portion accordingly.
> 
> This patch implements no functional change, only code reshuffling.
> 
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Hanjun Guo <hanjun.guo@...aro.org>
> Cc: Robin Murphy <robin.murphy@....com>
> Cc: Joerg Roedel <joro@...tes.org>
> ---
>  drivers/iommu/arm-smmu-v3.c | 63 +++++++++++++++++++++++++++++++++++++--------
>  1 file changed, 52 insertions(+), 11 deletions(-)

This looks sensible to me.

Acked-by: Will Deacon <will.deacon@....com>

Will