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Message-ID: <5f324b20-6710-4612-d78a-ea294ad283aa@samsung.com>
Date: Mon, 3 Apr 2023 09:03:54 +0200
From: Marek Szyprowski <m.szyprowski@...sung.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
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: linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH] iommu/exynos: Use the devm_clk_get_optional() helper
On 26.03.2023 14:37, Christophe JAILLET wrote:
> Use devm_clk_get_optional() instead of hand writing it.
> This saves some loC and improves the semantic.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>
> ---
> drivers/iommu/exynos-iommu.c | 24 ++++++++----------------
> 1 file changed, 8 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
> index 483aaaeb6dae..867f409e0325 100644
> --- a/drivers/iommu/exynos-iommu.c
> +++ b/drivers/iommu/exynos-iommu.c
> @@ -747,22 +747,16 @@ static int exynos_sysmmu_probe(struct platform_device *pdev)
> return ret;
> }
>
> - data->clk = devm_clk_get(dev, "sysmmu");
> - if (PTR_ERR(data->clk) == -ENOENT)
> - data->clk = NULL;
> - else if (IS_ERR(data->clk))
> + data->clk = devm_clk_get_optional(dev, "sysmmu");
> + if (IS_ERR(data->clk))
> return PTR_ERR(data->clk);
>
> - data->aclk = devm_clk_get(dev, "aclk");
> - if (PTR_ERR(data->aclk) == -ENOENT)
> - data->aclk = NULL;
> - else if (IS_ERR(data->aclk))
> + data->aclk = devm_clk_get_optional(dev, "aclk");
> + if (IS_ERR(data->aclk))
> return PTR_ERR(data->aclk);
>
> - data->pclk = devm_clk_get(dev, "pclk");
> - if (PTR_ERR(data->pclk) == -ENOENT)
> - data->pclk = NULL;
> - else if (IS_ERR(data->pclk))
> + data->pclk = devm_clk_get_optional(dev, "pclk");
> + if (IS_ERR(data->pclk))
> return PTR_ERR(data->pclk);
>
> if (!data->clk && (!data->aclk || !data->pclk)) {
> @@ -770,10 +764,8 @@ static int exynos_sysmmu_probe(struct platform_device *pdev)
> return -ENOSYS;
> }
>
> - data->clk_master = devm_clk_get(dev, "master");
> - if (PTR_ERR(data->clk_master) == -ENOENT)
> - data->clk_master = NULL;
> - else if (IS_ERR(data->clk_master))
> + data->clk_master = devm_clk_get_optional(dev, "master");
> + if (IS_ERR(data->clk_master))
> return PTR_ERR(data->clk_master);
>
> data->sysmmu = dev;
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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