Re: [PATCH 1/3] ASoC: fsl_sai: use local device pointer

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On Wed, Jun 1, 2022 at 5:23 PM Marco Felsch <m.felsch@xxxxxxxxxxxxxx> wrote:

> Use a local variable to dereference the device pointer once and use the
> local variable in further calls. No functional changes.
>
> Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
>

Acked-by: Shengjiu Wang <shengjiu.wang@xxxxxxxxx>

Best regards
Wang shengjiu

> ---
>  sound/soc/fsl/fsl_sai.c | 53 +++++++++++++++++++++--------------------
>  1 file changed, 27 insertions(+), 26 deletions(-)
>
> diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
> index fa950dde5310..a7637d602f3c 100644
> --- a/sound/soc/fsl/fsl_sai.c
> +++ b/sound/soc/fsl/fsl_sai.c
> @@ -1004,6 +1004,7 @@ static int fsl_sai_runtime_resume(struct device
> *dev);
>  static int fsl_sai_probe(struct platform_device *pdev)
>  {
>         struct device_node *np = pdev->dev.of_node;
> +       struct device *dev = &pdev->dev;
>         struct fsl_sai *sai;
>         struct regmap *gpr;
>         struct resource *res;
> @@ -1012,12 +1013,12 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>         int irq, ret, i;
>         int index;
>
> -       sai = devm_kzalloc(&pdev->dev, sizeof(*sai), GFP_KERNEL);
> +       sai = devm_kzalloc(dev, sizeof(*sai), GFP_KERNEL);
>         if (!sai)
>                 return -ENOMEM;
>
>         sai->pdev = pdev;
> -       sai->soc_data = of_device_get_match_data(&pdev->dev);
> +       sai->soc_data = of_device_get_match_data(dev);
>
>         sai->is_lsb_first = of_property_read_bool(np, "lsb-first");
>
> @@ -1032,18 +1033,18 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>                         ARRAY_SIZE(fsl_sai_reg_defaults_ofs8);
>         }
>
> -       sai->regmap = devm_regmap_init_mmio(&pdev->dev, base,
> &fsl_sai_regmap_config);
> +       sai->regmap = devm_regmap_init_mmio(dev, base,
> &fsl_sai_regmap_config);
>         if (IS_ERR(sai->regmap)) {
> -               dev_err(&pdev->dev, "regmap init failed\n");
> +               dev_err(dev, "regmap init failed\n");
>                 return PTR_ERR(sai->regmap);
>         }
>
> -       sai->bus_clk = devm_clk_get(&pdev->dev, "bus");
> +       sai->bus_clk = devm_clk_get(dev, "bus");
>         /* Compatible with old DTB cases */
>         if (IS_ERR(sai->bus_clk) && PTR_ERR(sai->bus_clk) != -EPROBE_DEFER)
> -               sai->bus_clk = devm_clk_get(&pdev->dev, "sai");
> +               sai->bus_clk = devm_clk_get(dev, "sai");
>         if (IS_ERR(sai->bus_clk)) {
> -               dev_err(&pdev->dev, "failed to get bus clock: %ld\n",
> +               dev_err(dev, "failed to get bus clock: %ld\n",
>                                 PTR_ERR(sai->bus_clk));
>                 /* -EPROBE_DEFER */
>                 return PTR_ERR(sai->bus_clk);
> @@ -1051,9 +1052,9 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>
>         for (i = 1; i < FSL_SAI_MCLK_MAX; i++) {
>                 sprintf(tmp, "mclk%d", i);
> -               sai->mclk_clk[i] = devm_clk_get(&pdev->dev, tmp);
> +               sai->mclk_clk[i] = devm_clk_get(dev, tmp);
>                 if (IS_ERR(sai->mclk_clk[i])) {
> -                       dev_err(&pdev->dev, "failed to get mclk%d clock:
> %ld\n",
> +                       dev_err(dev, "failed to get mclk%d clock: %ld\n",
>                                         i + 1, PTR_ERR(sai->mclk_clk[i]));
>                         sai->mclk_clk[i] = NULL;
>                 }
> @@ -1068,10 +1069,10 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>         if (irq < 0)
>                 return irq;
>
> -       ret = devm_request_irq(&pdev->dev, irq, fsl_sai_isr, IRQF_SHARED,
> +       ret = devm_request_irq(dev, irq, fsl_sai_isr, IRQF_SHARED,
>                                np->name, sai);
>         if (ret) {
> -               dev_err(&pdev->dev, "failed to claim irq %u\n", irq);
> +               dev_err(dev, "failed to claim irq %u\n", irq);
>                 return ret;
>         }
>
> @@ -1088,7 +1089,7 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>         if (of_find_property(np, "fsl,sai-synchronous-rx", NULL) &&
>             of_find_property(np, "fsl,sai-asynchronous", NULL)) {
>                 /* error out if both synchronous and asynchronous are
> present */
> -               dev_err(&pdev->dev, "invalid binding for synchronous
> mode\n");
> +               dev_err(dev, "invalid binding for synchronous mode\n");
>                 return -EINVAL;
>         }
>
> @@ -1109,7 +1110,7 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>             of_device_is_compatible(np, "fsl,imx6ul-sai")) {
>                 gpr =
> syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr");
>                 if (IS_ERR(gpr)) {
> -                       dev_err(&pdev->dev, "cannot find iomuxc
> registers\n");
> +                       dev_err(dev, "cannot find iomuxc registers\n");
>                         return PTR_ERR(gpr);
>                 }
>
> @@ -1127,23 +1128,23 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>         sai->dma_params_tx.maxburst = FSL_SAI_MAXBURST_TX;
>
>         platform_set_drvdata(pdev, sai);
> -       pm_runtime_enable(&pdev->dev);
> -       if (!pm_runtime_enabled(&pdev->dev)) {
> -               ret = fsl_sai_runtime_resume(&pdev->dev);
> +       pm_runtime_enable(dev);
> +       if (!pm_runtime_enabled(dev)) {
> +               ret = fsl_sai_runtime_resume(dev);
>                 if (ret)
>                         goto err_pm_disable;
>         }
>
> -       ret = pm_runtime_get_sync(&pdev->dev);
> +       ret = pm_runtime_get_sync(dev);
>         if (ret < 0) {
> -               pm_runtime_put_noidle(&pdev->dev);
> +               pm_runtime_put_noidle(dev);
>                 goto err_pm_get_sync;
>         }
>
>         /* Get sai version */
> -       ret = fsl_sai_check_version(&pdev->dev);
> +       ret = fsl_sai_check_version(dev);
>         if (ret < 0)
> -               dev_warn(&pdev->dev, "Error reading SAI version: %d\n",
> ret);
> +               dev_warn(dev, "Error reading SAI version: %d\n", ret);
>
>         /* Select MCLK direction */
>         if (of_find_property(np, "fsl,sai-mclk-direction-output", NULL) &&
> @@ -1152,7 +1153,7 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>                                    FSL_SAI_MCTL_MCLK_EN,
> FSL_SAI_MCTL_MCLK_EN);
>         }
>
> -       ret = pm_runtime_put_sync(&pdev->dev);
> +       ret = pm_runtime_put_sync(dev);
>         if (ret < 0)
>                 goto err_pm_get_sync;
>
> @@ -1165,12 +1166,12 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>                 if (ret)
>                         goto err_pm_get_sync;
>         } else {
> -               ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
> +               ret = devm_snd_dmaengine_pcm_register(dev, NULL, 0);
>                 if (ret)
>                         goto err_pm_get_sync;
>         }
>
> -       ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
> +       ret = devm_snd_soc_register_component(dev, &fsl_component,
>                                               &sai->cpu_dai_drv, 1);
>         if (ret)
>                 goto err_pm_get_sync;
> @@ -1178,10 +1179,10 @@ static int fsl_sai_probe(struct platform_device
> *pdev)
>         return ret;
>
>  err_pm_get_sync:
> -       if (!pm_runtime_status_suspended(&pdev->dev))
> -               fsl_sai_runtime_suspend(&pdev->dev);
> +       if (!pm_runtime_status_suspended(dev))
> +               fsl_sai_runtime_suspend(dev);
>  err_pm_disable:
> -       pm_runtime_disable(&pdev->dev);
> +       pm_runtime_disable(dev);
>
>         return ret;
>  }
> --
> 2.30.2
>
>



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