netdev - Re: [PATCH 04/12] soc: renesas: select RISCV_DMA_NONCOHERENT from ARCH

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Message-ID: <20231016-pantyhose-tall-7565b6b20fb9@wendy>
Date: Mon, 16 Oct 2023 13:52:57 +0100
From: Conor Dooley <conor.dooley@...rochip.com>
To: Christoph Hellwig <hch@....de>
CC: Greg Ungerer <gerg@...ux-m68k.org>, <iommu@...ts.linux.dev>, Paul Walmsley
	<paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, Conor Dooley
	<conor@...nel.org>, Geert Uytterhoeven <geert+renesas@...der.be>, Magnus Damm
	<magnus.damm@...il.com>, Robin Murphy <robin.murphy@....com>, Marek
 Szyprowski <m.szyprowski@...sung.com>, Geert Uytterhoeven
	<geert@...ux-m68k.org>, Wei Fang <wei.fang@....com>, Shenwei Wang
	<shenwei.wang@....com>, Clark Wang <xiaoning.wang@....com>, NXP Linux Team
	<linux-imx@....com>, <linux-m68k@...ts.linux-m68k.org>,
	<netdev@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
	<linux-renesas-soc@...r.kernel.org>, Jim Quinlan <james.quinlan@...adcom.com>
Subject: Re: [PATCH 04/12] soc: renesas: select RISCV_DMA_NONCOHERENT from
 ARCH_R9A07G043

On Mon, Oct 16, 2023 at 07:47:46AM +0200, Christoph Hellwig wrote:
> Selecting DMA_GLOBAL_POOL without the rest of the non-coherent DMA
> infrastructure does not make sense.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/soc/renesas/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
> index f1696d3b5018d0..ea473b4150dfa8 100644
> --- a/drivers/soc/renesas/Kconfig
> +++ b/drivers/soc/renesas/Kconfig
> @@ -338,6 +338,7 @@ config ARCH_R9A07G043
>  	select ARCH_RZG2L
>  	select AX45MP_L2_CACHE
>  	select DMA_GLOBAL_POOL
> +	select RISCV_DMA_NONCOHERENT
>  	select ERRATA_ANDES if RISCV_SBI
>  	select ERRATA_ANDES_CMO if ERRATA_ANDES

Since this Kconfig menu has changed a bit in linux-next, the selects
are unconditional here, and ERRATA_ANDES_CMO will in turn select
RISCV_DMA_NONCOHERENT.

I don't think being more explicit hurts anyone though, so
Acked-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks,
Conor.

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