pinctrl: renesas: rza1: Replace custom code by gpiochip_node_count() call

Since we have generic function to count GPIO controller nodes
under a given device, there is no need to open code it. Replace
custom code by gpiochip_node_count() call.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/drivers/pinctrl/renesas/pinctrl-rza1.c b/drivers/pinctrl/renesas/pinctrl-rza1.c
index c1d6e95..acc00b1 100644 (file)
--- a/drivers/pinctrl/renesas/pinctrl-rza1.c
+++ b/drivers/pinctrl/renesas/pinctrl-rza1.c
@@ -1154,21 +1154,6 @@ static const struct pinmux_ops rza1_pinmux_ops = {
  * RZ/A1 pin controller driver operations
  */
 
-static unsigned int rza1_count_gpio_chips(struct device_node *np)
-{
-       struct device_node *child;
-       unsigned int count = 0;
-
-       for_each_child_of_node(np, child) {
-               if (!of_property_read_bool(child, "gpio-controller"))
-                       continue;
-
-               count++;
-       }
-
-       return count;
-}
-
 /**
  * rza1_parse_gpiochip() - parse and register a gpio chip and pin range
  *
@@ -1255,7 +1240,7 @@ static int rza1_gpio_register(struct rza1_pinctrl *rza1_pctl)
        unsigned int i;
        int ret;
 
-       ngpiochips = rza1_count_gpio_chips(np);
+       ngpiochips = gpiochip_node_count(rza1_pctl->dev);
        if (ngpiochips == 0) {
                dev_dbg(rza1_pctl->dev, "No gpiochip registered\n");
                return 0;