linux-kernel - Re: [PATCH v4 09/25] scsi: ufs: mediatek: Rework the crypt-boost stuff

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Message-ID: <a12f7ffe8448d205a7318219ea7a18f0f722727f.camel@mediatek.com>
Date: Wed, 24 Dec 2025 06:16:34 +0000
From: Peter Wang (王信友) <peter.wang@...iatek.com>
To: "chu.stanley@...il.com" <chu.stanley@...il.com>, "robh@...nel.org"
	<robh@...nel.org>, Chunfeng Yun (云春峰)
	<Chunfeng.Yun@...iatek.com>, "kishon@...nel.org" <kishon@...nel.org>,
	"James.Bottomley@...senPartnership.com"
	<James.Bottomley@...senPartnership.com>, "bvanassche@....org"
	<bvanassche@....org>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, "neil.armstrong@...aro.org"
	<neil.armstrong@...aro.org>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
	Chaotian Jing (井朝天)
	<Chaotian.Jing@...iatek.com>, "lgirdwood@...il.com" <lgirdwood@...il.com>,
	"nicolas.frattaroli@...labora.com" <nicolas.frattaroli@...labora.com>,
	"vkoul@...nel.org" <vkoul@...nel.org>, "krzk+dt@...nel.org"
	<krzk+dt@...nel.org>, "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
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	"broonie@...nel.org" <broonie@...nel.org>
CC: "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-phy@...ts.infradead.org"
	<linux-phy@...ts.infradead.org>, "linux-mediatek@...ts.infradead.org"
	<linux-mediatek@...ts.infradead.org>, Louis-Alexis Eyraud
	<louisalexis.eyraud@...labora.com>, "kernel@...labora.com"
	<kernel@...labora.com>
Subject: Re: [PATCH v4 09/25] scsi: ufs: mediatek: Rework the crypt-boost
 stuff

On Thu, 2025-12-18 at 13:54 +0100, Nicolas Frattaroli wrote:
> -
> -static void ufs_mtk_init_boost_crypt(struct ufs_hba *hba)
> +static int ufs_mtk_init_boost_crypt(struct ufs_hba *hba)
> 

Hi Nicolas,

Please do not change the return type if you are not checking the return
value.


>  {
>         struct ufs_mtk_host *host = ufshcd_get_variant(hba);
>         struct ufs_mtk_crypt_cfg *cfg;
>         struct device *dev = hba->dev;
> -       struct regulator *reg;
> -       u32 volt;
> +       int ret;
> 
> -       host->crypt = devm_kzalloc(dev, sizeof(*(host->crypt)),
> -                                  GFP_KERNEL);
> -       if (!host->crypt)
> -               goto disable_caps;
> +       cfg = devm_kzalloc(dev, sizeof(*cfg), GFP_KERNEL);
> +       if (!cfg)
> +               return -ENOMEM;
> 
> -       reg = devm_regulator_get_optional(dev, "dvfsrc-vcore");
> -       if (IS_ERR(reg)) {
> -               dev_info(dev, "failed to get dvfsrc-vcore: %ld",
> -                        PTR_ERR(reg));
> -               goto disable_caps;
> +       cfg->reg_vcore = devm_regulator_get_optional(dev, "dvfsrc-
> vcore");
> +       if (IS_ERR(cfg->reg_vcore)) {
> +               dev_err(dev, "Failed to get dvfsrc-vcore: %pe", cfg-
> >reg_vcore);
> 

Should free the cfg memory?

> +               return PTR_ERR(cfg->reg_vcore);
>         }
> 
> -       if (of_property_read_u32(dev->of_node, "boost-crypt-vcore-
> min",
> -                                &volt)) {
> -               dev_info(dev, "failed to get boost-crypt-vcore-min");
> -               goto disable_caps;
> +       ret = of_property_read_u32(dev->of_node, "mediatek,boost-
> crypt-vcore-min",
> +                                  &cfg->vcore_volt);
> +       if (ret) {
> +               dev_err(dev, "Failed to get mediatek,boost-crypt-
> vcore-min: %pe\n",
> +                       ERR_PTR(ret));
> +               return ret;
>         }
> 
> -       cfg = host->crypt;
> -       if (ufs_mtk_init_host_clk(hba, "crypt_mux",
> -                                 &cfg->clk_crypt_mux))
> -               goto disable_caps;
> +       cfg->clk_crypt_mux = devm_clk_get(dev, "crypt_mux");
> +       if (IS_ERR(cfg->clk_crypt_mux)) {
> +               dev_err(dev, "Failed to get clock crypt_mux: %pe\n",
> cfg->clk_crypt_mux);
> +               return PTR_ERR(cfg->clk_crypt_mux);
> +       }
> 
> -       if (ufs_mtk_init_host_clk(hba, "crypt_lp",
> -                                 &cfg->clk_crypt_lp))
> -               goto disable_caps;
> +       cfg->clk_crypt_lp = devm_clk_get(dev, "crypt_lp");
> +       if (IS_ERR(cfg->clk_crypt_lp)) {
> +               dev_err(dev, "Failed to get clock crypt_lp: %pe\n",
> cfg->clk_crypt_lp);
> +               return PTR_ERR(cfg->clk_crypt_lp);
> +       }
> 
> -       if (ufs_mtk_init_host_clk(hba, "crypt_perf",
> -                                 &cfg->clk_crypt_perf))
> -               goto disable_caps;
> +       cfg->clk_crypt_perf = devm_clk_get(dev, "crypt_perf");
> +       if (IS_ERR(cfg->clk_crypt_perf)) {
> +               dev_err(dev, "Failed to get clock crypt_perf: %pe\n",
> cfg->clk_crypt_perf);
> +               return PTR_ERR(cfg->clk_crypt_perf);
> +       }
> 
> -       cfg->reg_vcore = reg;
> -       cfg->vcore_volt = volt;
> +       host->crypt = cfg;
>         host->caps |= UFS_MTK_CAP_BOOST_CRYPT_ENGINE;
> 
> -disable_caps:
> -       return;
> +       return 0;
>  }
> 
>  static void ufs_mtk_init_host_caps(struct ufs_hba *hba)
> 
> --
> 2.52.0
>