linux-kernel - [PATCH v5 3/6] pinctrl: armada-37xx: Reuse GPIO fwnode in armada_37xx_irqchip

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Message-Id: <20220414190242.22178-4-andriy.shevchenko@linux.intel.com>
Date:   Thu, 14 Apr 2022 22:02:39 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        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>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: [PATCH v5 3/6] pinctrl: armada-37xx: Reuse GPIO fwnode in armada_37xx_irqchip_register()

Since we have fwnode of the first found GPIO controller assigned to the
struct gpio_chip, we may reuse it in the armada_37xx_irqchip_register().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
index 110f70bce3fe..ef4118e49f16 100644
--- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
+++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
@@ -727,23 +727,13 @@ static int armada_37xx_irqchip_register(struct platform_device *pdev,
 	struct gpio_chip *gc = &info->gpio_chip;
 	struct irq_chip *irqchip = &info->irq_chip;
 	struct gpio_irq_chip *girq = &gc->irq;
+	struct device_node *np = to_of_node(gc->fwnode);
 	struct device *dev = &pdev->dev;
-	struct device_node *np;
-	int ret = -ENODEV, i, nr_irq_parent;
-
-	/* Check if we have at least one gpio-controller child node */
-	for_each_child_of_node(dev->of_node, np) {
-		if (of_property_read_bool(np, "gpio-controller")) {
-			ret = 0;
-			break;
-		}
-	}
-	if (ret)
-		return dev_err_probe(dev, ret, "no gpio-controller child node\n");
+	unsigned int i, nr_irq_parent;
 
-	nr_irq_parent = of_irq_count(np);
 	spin_lock_init(&info->irq_lock);
 
+	nr_irq_parent = of_irq_count(np);
 	if (!nr_irq_parent) {
 		dev_err(dev, "invalid or no IRQ\n");
 		return 0;
-- 
2.35.1