linux-kernel - Re: [PATCH 4/6] iommu/exynos: Convert to devm_platform_ioremap

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Message-ID: <33712296-5887-d810-096b-c95cd718626d@samsung.com>
Date:   Mon, 10 Jul 2023 16:41:12 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Yangtao Li <frank.li@...o.com>, Joerg Roedel <joro@...tes.org>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>
Cc:     iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] iommu/exynos: Convert to
 devm_platform_ioremap_resource()

On 05.07.2023 15:04, Yangtao Li wrote:
> Use devm_platform_ioremap_resource() to simplify code.
>
> Signed-off-by: Yangtao Li <frank.li@...o.com>

Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>


> ---
>   drivers/iommu/exynos-iommu.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
> index c275fe71c4db..ab6208015997 100644
> --- a/drivers/iommu/exynos-iommu.c
> +++ b/drivers/iommu/exynos-iommu.c
> @@ -725,19 +725,17 @@ static int exynos_sysmmu_probe(struct platform_device *pdev)
>   	int irq, ret;
>   	struct device *dev = &pdev->dev;
>   	struct sysmmu_drvdata *data;
> -	struct resource *res;
>   
>   	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
>   	if (!data)
>   		return -ENOMEM;
>   
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	data->sfrbase = devm_ioremap_resource(dev, res);
> +	data->sfrbase = devm_platform_ioremap_resource(pdev, 0);
>   	if (IS_ERR(data->sfrbase))
>   		return PTR_ERR(data->sfrbase);
>   
>   	irq = platform_get_irq(pdev, 0);
> -	if (irq <= 0)
> +	if (irq < 0)
>   		return irq;
>   
>   	ret = devm_request_irq(dev, irq, exynos_sysmmu_irq, 0,

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland