linux-kernel - Re: [PATCH v3 7/7] dma-mapping: Simplify arch_setup_dma

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Date: Fri, 8 Mar 2024 16:37:37 -0400
From: Jason Gunthorpe <jgg@...pe.ca>
To: Robin Murphy <robin.murphy@....com>
Cc: Vineet Gupta <vgupta@...nel.org>, Russell King <linux@...linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Huacai Chen <chenhuacai@...nel.org>,
	WANG Xuerui <kernel@...0n.name>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Hanjun Guo <guohanjun@...wei.com>,
	Sudeep Holla <sudeep.holla@....com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
	Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
	David Woodhouse <dwmw2@...radead.org>,
	Lu Baolu <baolu.lu@...ux.intel.com>,
	Niklas Schnelle <schnelle@...ux.ibm.com>,
	Matthew Rosato <mjrosato@...ux.ibm.com>,
	Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
	Jean-Philippe Brucker <jean-philippe@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-acpi@...r.kernel.org, iommu@...ts.linux.dev,
	devicetree@...r.kernel.org, Rob Herring <robh@...nel.org>,
	Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v3 7/7] dma-mapping: Simplify arch_setup_dma_ops()

On Fri, Feb 09, 2024 at 04:50:04PM +0000, Robin Murphy wrote:
> The dma_base, size and iommu arguments are only used by ARM, and can
> now easily be deduced from the device itself, so there's no need to pass
> them through the callchain as well.
> 
> Acked-by: Rob Herring <robh@...nel.org>
> Reviewed-by: Christoph Hellwig <hch@....de>
> Signed-off-by: Robin Murphy <robin.murphy@....com>
> ---
> v2: Make sure the ARM changes actually build (oops...)
> ---
>  arch/arc/mm/dma.c               |  3 +--
>  arch/arm/mm/dma-mapping-nommu.c |  3 +--
>  arch/arm/mm/dma-mapping.c       | 16 +++++++++-------
>  arch/arm64/mm/dma-mapping.c     |  3 +--
>  arch/mips/mm/dma-noncoherent.c  |  3 +--
>  arch/riscv/mm/dma-noncoherent.c |  3 +--
>  drivers/acpi/scan.c             |  7 +------
>  drivers/hv/hv_common.c          |  6 +-----
>  drivers/of/device.c             |  4 +---
>  include/linux/dma-map-ops.h     |  6 ++----
>  10 files changed, 19 insertions(+), 35 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason