linux-kernel - Re: [PATCH 3/4] media: cedrus: Make SRAM section claiming optional

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Message-ID: <Y7agJBFqcvqyLNhK@aptenodytes>
Date:   Thu, 5 Jan 2023 11:02:12 +0100
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        Conor Dooley <conor@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Maxime Ripard <mripard@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-staging@...ts.linux.dev,
        linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH 3/4] media: cedrus: Make SRAM section claiming optional

Hi Samuel,

On Sat 31 Dec 22, 10:46, Samuel Holland wrote:
> The video engine in the D1 family of SoCs does not have a switchable
> SRAM section. Allow the driver to probe even when the SRAM section
> reference is missing.
> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>

Looks good, I've also just checked that calling sunxi_sram_release with no
reference to the SRAM held is fine (maybe a word about it in the commit log
would be nice, but probably not worth making a v2 just for that).

Reviewed-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>

Cheers,

Paul

> ---
> 
>  drivers/staging/media/sunxi/cedrus/cedrus_hw.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> index fa86a658fdc6..11e859617932 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> @@ -257,7 +257,7 @@ int cedrus_hw_probe(struct cedrus_dev *dev)
>  	}
>  
>  	ret = sunxi_sram_claim(dev->dev);
> -	if (ret) {
> +	if (ret && ret != -ENOENT) {
>  		dev_err(dev->dev, "Failed to claim SRAM\n");
>  
>  		goto err_mem;
> -- 
> 2.37.4
> 

-- 
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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