gpio: nomadik: replace of_find_*() by bus_find_device_by_of_node()

Avoid OF APIs in the GPIO subsystem. Here, replace
of_find_device_by_node() call by bus_find_device_by_of_node().

The new helper returns a struct device pointer. Store it in a new local
variable and use it down the road.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-15-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-nomadik.c b/drivers/gpio/gpio-nomadik.c
index 9347c93af62c44aff4384eefe7d749821d16f8ea..f3ef3b4d08eb46ca759f7c575cab857811c54221 100644 (file)
--- a/drivers/gpio/gpio-nomadik.c
+++ b/drivers/gpio/gpio-nomadik.c
@@ -483,17 +483,20 @@ struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np,
 {
        struct nmk_gpio_chip *nmk_chip;
        struct platform_device *gpio_pdev;
+       struct device *gpio_dev;
        struct gpio_chip *chip;
        struct resource *res;
        struct clk *clk;
        void __iomem *base;
        u32 id;
 
-       gpio_pdev = of_find_device_by_node(np);
-       if (!gpio_pdev) {
+       gpio_dev = bus_find_device_by_of_node(&platform_bus_type, np);
+       if (!gpio_dev) {
                pr_err("populate \"%pOFn\": device not found\n", np);
                return ERR_PTR(-ENODEV);
        }
+       gpio_pdev = to_platform_device(gpio_dev);
+
        if (of_property_read_u32(np, "gpio-bank", &id)) {
                dev_err(&pdev->dev, "populate: gpio-bank property not found\n");
                platform_device_put(gpio_pdev);
@@ -519,8 +522,8 @@ struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np,
        chip = &nmk_chip->chip;
        chip->base = id * NMK_GPIO_PER_CHIP;
        chip->ngpio = NMK_GPIO_PER_CHIP;
-       chip->label = dev_name(&gpio_pdev->dev);
-       chip->parent = &gpio_pdev->dev;
+       chip->label = dev_name(gpio_dev);
+       chip->parent = gpio_dev;
 
        res = platform_get_resource(gpio_pdev, IORESOURCE_MEM, 0);
        base = devm_ioremap_resource(&pdev->dev, res);
@@ -530,7 +533,7 @@ struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np,
        }
        nmk_chip->addr = base;
 
-       clk = clk_get(&gpio_pdev->dev, NULL);
+       clk = clk_get(gpio_dev, NULL);
        if (IS_ERR(clk)) {
                platform_device_put(gpio_pdev);
                return (void *)clk;