linux-kernel - [PATCH 5.18 082/158] pinctrl: armada-37xx: Reuse GPIO fwnode in armada_37xx_irqchip

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Message-Id: <20220727161024.788030612@linuxfoundation.org>
Date:   Wed, 27 Jul 2022 18:12:26 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 082/158] pinctrl: armada-37xx: Reuse GPIO fwnode in armada_37xx_irqchip_register()

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

[ Upstream commit 46d34d4d502ea1030f5de434e6677ec96ca131c3 ]

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>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 5fc305222d2f..226798d9c067 100644
--- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
+++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
@@ -726,23 +726,13 @@ 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