Re: [PATCH v2 5/5] pinctrl: at91: Utilise temporary variable for struct device

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On 13.02.2023 17:45, Andy Shevchenko wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> We have a temporary variable to keep pointer to struct device.
> Utilise it inside the ->probe() implementation.

Apart from this the patch also removes some { } and does some alignments.
For clarity some of these might go better in a different patch.

> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> ---
>  drivers/pinctrl/pinctrl-at91.c | 63 +++++++++++++++-------------------
>  1 file changed, 27 insertions(+), 36 deletions(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
> index 08f88403affb..7ada36ca64eb 100644
> --- a/drivers/pinctrl/pinctrl-at91.c
> +++ b/drivers/pinctrl/pinctrl-at91.c
> @@ -1304,7 +1304,7 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
>         if (!np)
>                 return -ENODEV;
> 
> -       info->dev = &pdev->dev;
> +       info->dev = dev;
>         info->ops = of_device_get_match_data(dev);
>         at91_pinctrl_child_count(info, np);
> 
> @@ -1324,35 +1324,30 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
>         if (ret)
>                 return ret;
> 
> -       dev_dbg(&pdev->dev, "nmux = %d\n", info->nmux);
> +       dev_dbg(dev, "nmux = %d\n", info->nmux);
> 
> -       dev_dbg(&pdev->dev, "mux-mask\n");
> +       dev_dbg(dev, "mux-mask\n");
>         tmp = info->mux_mask;
>         for (i = 0; i < gpio_banks; i++) {
> -               for (j = 0; j < info->nmux; j++, tmp++) {

here

> -                       dev_dbg(&pdev->dev, "%d:%d\t0x%x\n", i, j, tmp[0]);
> -               }
> +               for (j = 0; j < info->nmux; j++, tmp++)
> +                       dev_dbg(dev, "%d:%d\t0x%x\n", i, j, tmp[0]);
>         }
> 
> -       dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
> -       dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
> -       info->functions = devm_kcalloc(&pdev->dev,
> -                                       info->nfunctions,
> -                                       sizeof(struct at91_pmx_func),
> -                                       GFP_KERNEL);
> +       dev_dbg(dev, "nfunctions = %d\n", info->nfunctions);
> +       dev_dbg(dev, "ngroups = %d\n", info->ngroups);
> +       info->functions = devm_kcalloc(dev, info->nfunctions, sizeof(*info->functions),
> +                                      GFP_KERNEL);
>         if (!info->functions)
>                 return -ENOMEM;
> 
> -       info->groups = devm_kcalloc(&pdev->dev,
> -                                       info->ngroups,
> -                                       sizeof(struct at91_pin_group),
> -                                       GFP_KERNEL);
> +       info->groups = devm_kcalloc(dev, info->ngroups, sizeof(*info->groups),
> +                                   GFP_KERNEL);
>         if (!info->groups)
>                 return -ENOMEM;
> 
> -       dev_dbg(&pdev->dev, "nbanks = %d\n", gpio_banks);
> -       dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
> -       dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
> +       dev_dbg(dev, "nbanks = %d\n", gpio_banks);
> +       dev_dbg(dev, "nfunctions = %d\n", info->nfunctions);
> +       dev_dbg(dev, "ngroups = %d\n", info->ngroups);
> 
>         i = 0;
> 
> @@ -1376,7 +1371,7 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
>         struct pinctrl_pin_desc *pdesc;
>         int ret, i, j, k;
> 
> -       info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
> +       info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
>         if (!info)
>                 return -ENOMEM;
> 
> @@ -1384,13 +1379,10 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
>         if (ret)
>                 return ret;
> 
> -       at91_pinctrl_desc.name = dev_name(&pdev->dev);
> +       at91_pinctrl_desc.name = dev_name(dev);
>         at91_pinctrl_desc.npins = gpio_banks * MAX_NB_GPIO_PER_BANK;
>         at91_pinctrl_desc.pins = pdesc =
> -               devm_kcalloc(&pdev->dev,
> -                            at91_pinctrl_desc.npins, sizeof(*pdesc),
> -                            GFP_KERNEL);
> -
> +               devm_kcalloc(dev, at91_pinctrl_desc.npins, sizeof(*pdesc), GFP_KERNEL);
>         if (!at91_pinctrl_desc.pins)
>                 return -ENOMEM;
> 
> @@ -1413,8 +1405,7 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
>         }
> 
>         platform_set_drvdata(pdev, info);
> -       info->pctl = devm_pinctrl_register(&pdev->dev, &at91_pinctrl_desc,
> -                                          info);
> +       info->pctl = devm_pinctrl_register(dev, &at91_pinctrl_desc, info);
>         if (IS_ERR(info->pctl))
>                 return dev_err_probe(dev, PTR_ERR(info->pctl), "could not register AT91 pinctrl driver\n");
> 
> @@ -1423,7 +1414,7 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
>                 if (gpio_chips[i])
>                         pinctrl_add_gpio_range(info->pctl, &gpio_chips[i]->range);
> 
> -       dev_info(&pdev->dev, "initialized AT91 pinctrl driver\n");
> +       dev_info(dev, "initialized AT91 pinctrl driver\n");
> 
>         return 0;
>  }
> @@ -1714,6 +1705,7 @@ static void gpio_irq_handler(struct irq_desc *desc)
>  static int at91_gpio_of_irq_setup(struct platform_device *pdev,
>                                   struct at91_gpio_chip *at91_gpio)
>  {
> +       struct device           *dev = &pdev->dev;
>         struct gpio_chip        *gpiochip_prev = NULL;
>         struct at91_gpio_chip   *prev = NULL;
>         struct irq_data         *d = irq_get_irq_data(at91_gpio->pioc_virq);
> @@ -1721,8 +1713,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
>         struct gpio_irq_chip    *girq;
>         int i;
> 
> -       gpio_irqchip = devm_kzalloc(&pdev->dev, sizeof(*gpio_irqchip),
> -                                   GFP_KERNEL);
> +       gpio_irqchip = devm_kzalloc(dev, sizeof(*gpio_irqchip), GFP_KERNEL);
>         if (!gpio_irqchip)
>                 return -ENOMEM;
> 
> @@ -1758,7 +1749,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
>         if (!gpiochip_prev) {
>                 girq->parent_handler = gpio_irq_handler;
>                 girq->num_parents = 1;
> -               girq->parents = devm_kcalloc(&pdev->dev, 1,
> +               girq->parents = devm_kcalloc(dev, girq->num_parents,
>                                              sizeof(*girq->parents),
>                                              GFP_KERNEL);
>                 if (!girq->parents)
> @@ -1824,7 +1815,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
>         if (irq < 0)
>                 return irq;
> 
> -       at91_chip = devm_kzalloc(&pdev->dev, sizeof(*at91_chip), GFP_KERNEL);
> +       at91_chip = devm_kzalloc(dev, sizeof(*at91_chip), GFP_KERNEL);
>         if (!at91_chip)
>                 return -ENOMEM;
> 
> @@ -1836,7 +1827,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
>         at91_chip->pioc_virq = irq;
>         at91_chip->pioc_idx = alias_idx;
> 
> -       at91_chip->clock = devm_clk_get_enabled(&pdev->dev, NULL);
> +       at91_chip->clock = devm_clk_get_enabled(dev, NULL);
>         if (IS_ERR(at91_chip->clock))
>                 return dev_err_probe(dev, PTR_ERR(at91_chip->clock), "failed to get clock, ignoring.\n");
> 
> @@ -1844,8 +1835,8 @@ static int at91_gpio_probe(struct platform_device *pdev)
>         at91_chip->id = alias_idx;
> 
>         chip = &at91_chip->chip;
> -       chip->label = dev_name(&pdev->dev);
> -       chip->parent = &pdev->dev;
> +       chip->label = dev_name(dev);
> +       chip->parent = dev;
>         chip->owner = THIS_MODULE;
>         chip->base = alias_idx * MAX_NB_GPIO_PER_BANK;
> 
> @@ -1886,7 +1877,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
>         platform_set_drvdata(pdev, at91_chip);
>         gpio_banks = max(gpio_banks, alias_idx + 1);
> 
> -       dev_info(&pdev->dev, "at address %p\n", at91_chip->regbase);
> +       dev_info(dev, "at address %p\n", at91_chip->regbase);
> 
>         return 0;
>  }
> --
> 2.39.1
>
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