linux-kernel - [PATCH v7 1/5] leds: flash: Add flash registration with undefined CONFIG_LEDS_CLASS

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Message-Id: <1605696462-391-2-git-send-email-gene.chen.richtek@gmail.com>
Date:   Wed, 18 Nov 2020 18:47:38 +0800
From:   Gene Chen <gene.chen.richtek@...il.com>
To:     jacek.anaszewski@...il.com, pavel@....cz, robh+dt@...nel.org,
        matthias.bgg@...il.com
Cc:     dmurphy@...com, linux-leds@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        gene_chen@...htek.com, Wilma.Wu@...iatek.com,
        shufan_lee@...htek.com, cy_huang@...htek.com,
        benjamin.chao@...iatek.com
Subject: [PATCH v7 1/5] leds: flash: Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH

From: Gene Chen <gene_chen@...htek.com>

Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH

Signed-off-by: Gene Chen <gene_chen@...htek.com>
---
 include/linux/led-class-flash.h | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/include/linux/led-class-flash.h b/include/linux/led-class-flash.h
index 21a3358..4f56c28 100644
--- a/include/linux/led-class-flash.h
+++ b/include/linux/led-class-flash.h
@@ -85,6 +85,7 @@ static inline struct led_classdev_flash *lcdev_to_flcdev(
 	return container_of(lcdev, struct led_classdev_flash, led_cdev);
 }
 
+#if IS_ENABLED(CONFIG_LEDS_CLASS_FLASH)
 /**
  * led_classdev_flash_register_ext - register a new object of LED class with
  *				     init data and with support for flash LEDs
@@ -127,6 +128,41 @@ static inline int devm_led_classdev_flash_register(struct device *parent,
 void devm_led_classdev_flash_unregister(struct device *parent,
 					struct led_classdev_flash *fled_cdev);
 
+#else
+
+static inline int led_classdev_flash_register_ext(struct device *parent,
+				    struct led_classdev_flash *fled_cdev,
+				    struct led_init_data *init_data)
+{
+	return -EINVAL;
+}
+
+static inline int led_classdev_flash_register(struct device *parent,
+					   struct led_classdev_flash *fled_cdev)
+{
+	return led_classdev_flash_register_ext(parent, fled_cdev, NULL);
+}
+
+static inline void led_classdev_flash_unregister(struct led_classdev_flash *fled_cdev) {};
+static inline int devm_led_classdev_flash_register_ext(struct device *parent,
+				     struct led_classdev_flash *fled_cdev,
+				     struct led_init_data *init_data)
+{
+	return -EINVAL;
+}
+
+static inline int devm_led_classdev_flash_register(struct device *parent,
+				     struct led_classdev_flash *fled_cdev)
+{
+	return devm_led_classdev_flash_register_ext(parent, fled_cdev, NULL);
+}
+
+void devm_led_classdev_flash_unregister(struct device *parent,
+					struct led_classdev_flash *fled_cdev)
+{};
+
+#endif  /* IS_ENABLED(CONFIG_LEDS_CLASS_FLASH) */
+
 /**
  * led_set_flash_strobe - setup flash strobe
  * @fled_cdev: the flash LED to set strobe on
-- 
2.7.4