linux-kernel - [PATCH v4 06/13] pinctrl: renesas: rza1: Replace custom code by gpiochip_node

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Message-Id: <20220401103604.8705-7-andriy.shevchenko@linux.intel.com>
Date:   Fri,  1 Apr 2022 13:35:57 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Qianggui Song <qianggui.song@...ogic.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Marc Zyngier <maz@...nel.org>,
        Fabien Dessenne <fabien.dessenne@...s.st.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        openbmc@...ts.ozlabs.org, linux-renesas-soc@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH v4 06/13] 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@...ux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Tested-by: Geert Uytterhoeven <geert+renesas@...der.be>
Acked-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 drivers/pinctrl/renesas/pinctrl-rza1.c | 17 +----------------
 1 file changed, 1 insertion(+), 16 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rza1.c b/drivers/pinctrl/renesas/pinctrl-rza1.c
index c1d6e9512c7a..acc00b1a955d 100644
--- 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;
-- 
2.35.1