linux-kernel - [PATCH v10 2/6] leds: flash: Fix multicolor no-ops registration by return 0

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Message-Id: <1606447736-7944-3-git-send-email-gene.chen.richtek@gmail.com>
Date:   Fri, 27 Nov 2020 11:28:52 +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 v10 2/6] leds: flash: Fix multicolor no-ops registration by return 0

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

Fix multicolor no-ops registration by return 0,
and reuse same registration functions no matter multicolor class exist or not.

Signed-off-by: Gene Chen <gene_chen@...htek.com>
---
 include/linux/led-class-multicolor.h | 42 +++++++++++++-----------------------
 1 file changed, 15 insertions(+), 27 deletions(-)

diff --git a/include/linux/led-class-multicolor.h b/include/linux/led-class-multicolor.h
index 5116f9a..210d57b 100644
--- a/include/linux/led-class-multicolor.h
+++ b/include/linux/led-class-multicolor.h
@@ -44,12 +44,6 @@ int led_classdev_multicolor_register_ext(struct device *parent,
 					    struct led_classdev_mc *mcled_cdev,
 					    struct led_init_data *init_data);
 
-static inline int led_classdev_multicolor_register(struct device *parent,
-					    struct led_classdev_mc *mcled_cdev)
-{
-	return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
-}
-
 /**
  * led_classdev_multicolor_unregister - unregisters an object of led_classdev
  *					class with support for multicolor LEDs
@@ -68,13 +62,6 @@ int devm_led_classdev_multicolor_register_ext(struct device *parent,
 					  struct led_classdev_mc *mcled_cdev,
 					  struct led_init_data *init_data);
 
-static inline int devm_led_classdev_multicolor_register(struct device *parent,
-				     struct led_classdev_mc *mcled_cdev)
-{
-	return devm_led_classdev_multicolor_register_ext(parent, mcled_cdev,
-							 NULL);
-}
-
 void devm_led_classdev_multicolor_unregister(struct device *parent,
 					    struct led_classdev_mc *mcled_cdev);
 #else
@@ -83,27 +70,33 @@ static inline int led_classdev_multicolor_register_ext(struct device *parent,
 					    struct led_classdev_mc *mcled_cdev,
 					    struct led_init_data *init_data)
 {
-	return -EINVAL;
-}
-
-static inline int led_classdev_multicolor_register(struct device *parent,
-					    struct led_classdev_mc *mcled_cdev)
-{
-	return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
+	return 0;
 }
 
 static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) {};
 static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
 					       enum led_brightness brightness)
 {
-	return -EINVAL;
+	return 0;
 }
 
 static inline int devm_led_classdev_multicolor_register_ext(struct device *parent,
 					  struct led_classdev_mc *mcled_cdev,
 					  struct led_init_data *init_data)
 {
-	return -EINVAL;
+	return 0;
+}
+
+static inline void devm_led_classdev_multicolor_unregister(struct device *parent,
+					    struct led_classdev_mc *mcled_cdev)
+{};
+
+#endif  /* IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) */
+
+static inline int led_classdev_multicolor_register(struct device *parent,
+					    struct led_classdev_mc *mcled_cdev)
+{
+	return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
 }
 
 static inline int devm_led_classdev_multicolor_register(struct device *parent,
@@ -113,9 +106,4 @@ static inline int devm_led_classdev_multicolor_register(struct device *parent,
 							 NULL);
 }
 
-static inline void devm_led_classdev_multicolor_unregister(struct device *parent,
-					    struct led_classdev_mc *mcled_cdev)
-{};
-
-#endif  /* IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) */
 #endif	/* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */
-- 
2.7.4