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

From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
To: Samuel Holland <samuel@sholland.org>
Cc: Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Conor Dooley <conor@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Maxime Ripard <mripard@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
	linux-riscv@lists.infradead.org, linux-staging@lists.linux.dev,
	linux-sunxi@lists.linux.dev
Subject: Re: [PATCH 3/4] media: cedrus: Make SRAM section claiming optional
Date: Thu, 5 Jan 2023 11:02:12 +0100	[thread overview]
Message-ID: <Y7agJBFqcvqyLNhK@aptenodytes> (raw)
In-Reply-To: <20221231164628.19688-4-samuel@sholland.org>

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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@sholland.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@bootlin.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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