linux-kernel - [PATCH v2 3/7] leds: gpio: add helper cdev_to_gpio_led

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Message-ID: <209962f6-7f7a-05be-c2e2-682273d9f667@gmail.com>
Date:   Wed, 14 Sep 2016 20:55:00 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Jacek Anaszewski <j.anaszewski@...sung.com>
Cc:     "linux-leds@...r.kernel.org" <linux-leds@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 3/7] leds: gpio: add helper cdev_to_gpio_led_data

Add a helper for the container_of as it's used more than once.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
v2:
- rebased due to removal of patch 2 of the original series
---
 drivers/leds/leds-gpio.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 10c851e..da4aa8e 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -29,11 +29,16 @@ struct gpio_led_data {
 	gpio_blink_set_t platform_gpio_blink_set;
 };
 
+static inline struct gpio_led_data *
+			cdev_to_gpio_led_data(struct led_classdev *led_cdev)
+{
+	return container_of(led_cdev, struct gpio_led_data, cdev);
+}
+
 static void gpio_led_set(struct led_classdev *led_cdev,
 	enum led_brightness value)
 {
-	struct gpio_led_data *led_dat =
-		container_of(led_cdev, struct gpio_led_data, cdev);
+	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
 	int level;
 
 	if (value == LED_OFF)
@@ -63,8 +68,7 @@ static int gpio_led_set_blocking(struct led_classdev *led_cdev,
 static int gpio_blink_set(struct led_classdev *led_cdev,
 	unsigned long *delay_on, unsigned long *delay_off)
 {
-	struct gpio_led_data *led_dat =
-		container_of(led_cdev, struct gpio_led_data, cdev);
+	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
 
 	led_dat->blinking = 1;
 	return led_dat->platform_gpio_blink_set(led_dat->gpiod, GPIO_LED_BLINK,
-- 
2.9.2