linux-kernel - [PATCH v3 03/10] gpio: aggregator: move GPIO forwarder allocation in a dedicated function

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Message-Id: <20250416-aaeon-up-board-pinctrl-support-v3-3-9ca13aa57312@bootlin.com>
Date: Wed, 16 Apr 2025 15:59:55 +0200
From: Thomas Richard <thomas.richard@...tlin.com>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Geert Uytterhoeven <geert+renesas@...der.be>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 thomas.petazzoni@...tlin.com, DanieleCleri@...on.eu, GaryWang@...on.com.tw, 
 Thomas Richard <thomas.richard@...tlin.com>
Subject: [PATCH v3 03/10] gpio: aggregator: move GPIO forwarder allocation
 in a dedicated function

Move the GPIO forwarder allocation and static initialization in a dedicated
function.

Signed-off-by: Thomas Richard <thomas.richard@...tlin.com>
---
 drivers/gpio/gpio-aggregator.c | 48 ++++++++++++++++++++++++++++--------------
 1 file changed, 32 insertions(+), 16 deletions(-)

diff --git a/drivers/gpio/gpio-aggregator.c b/drivers/gpio/gpio-aggregator.c
index d232ea865356..a5e3ae4d8813 100644
--- a/drivers/gpio/gpio-aggregator.c
+++ b/drivers/gpio/gpio-aggregator.c
@@ -498,6 +498,37 @@ static int gpiochip_fwd_setup_delay_line(struct device *dev, struct gpio_chip *c
 }
 #endif	/* !CONFIG_OF_GPIO */
 
+static struct gpiochip_fwd *
+devm_gpiochip_fwd_alloc(struct device *dev, unsigned int ngpios)
+{
+	const char *label = dev_name(dev);
+	struct gpiochip_fwd *fwd;
+	struct gpio_chip *chip;
+
+	fwd = devm_kzalloc(dev, struct_size(fwd, tmp, fwd_tmp_size(ngpios)),
+			   GFP_KERNEL);
+	if (!fwd)
+		return ERR_PTR(-ENOMEM);
+
+	chip = &fwd->chip;
+
+	chip->label = label;
+	chip->parent = dev;
+	chip->owner = THIS_MODULE;
+	chip->get_direction = gpio_fwd_get_direction;
+	chip->direction_input = gpio_fwd_direction_input;
+	chip->direction_output = gpio_fwd_direction_output;
+	chip->get = gpio_fwd_get;
+	chip->get_multiple = gpio_fwd_get_multiple_locked;
+	chip->set_rv = gpio_fwd_set;
+	chip->set_multiple_rv = gpio_fwd_set_multiple_locked;
+	chip->to_irq = gpio_fwd_to_irq;
+	chip->base = -1;
+	chip->ngpio = ngpios;
+
+	return fwd;
+}
+
 /**
  * gpiochip_fwd_create() - Create a new GPIO forwarder
  * @dev: Parent device pointer
@@ -518,14 +549,12 @@ static struct gpiochip_fwd *gpiochip_fwd_create(struct device *dev,
 						struct gpio_desc *descs[],
 						unsigned long features)
 {
-	const char *label = dev_name(dev);
 	struct gpiochip_fwd *fwd;
 	struct gpio_chip *chip;
 	unsigned int i;
 	int error;
 
-	fwd = devm_kzalloc(dev, struct_size(fwd, tmp, fwd_tmp_size(ngpios)),
-			   GFP_KERNEL);
+	fwd = devm_gpiochip_fwd_alloc(dev, ngpios);
 	if (!fwd)
 		return ERR_PTR(-ENOMEM);
 
@@ -549,19 +578,6 @@ static struct gpiochip_fwd *gpiochip_fwd_create(struct device *dev,
 			chip->set_config = gpio_fwd_set_config;
 	}
 
-	chip->label = label;
-	chip->parent = dev;
-	chip->owner = THIS_MODULE;
-	chip->get_direction = gpio_fwd_get_direction;
-	chip->direction_input = gpio_fwd_direction_input;
-	chip->direction_output = gpio_fwd_direction_output;
-	chip->get = gpio_fwd_get;
-	chip->get_multiple = gpio_fwd_get_multiple_locked;
-	chip->set_rv = gpio_fwd_set;
-	chip->set_multiple_rv = gpio_fwd_set_multiple_locked;
-	chip->to_irq = gpio_fwd_to_irq;
-	chip->base = -1;
-	chip->ngpio = ngpios;
 	fwd->descs = descs;
 
 	if (chip->can_sleep)

-- 
2.39.5