[PATCH v4 20/20] backlight: make of_find_backlight_by_node() static

[Sam Ravnborg <sam@ravnborg.org>]

There are no external users of of_find_backlight_by_node().
Make it static so we keep it that way.

v2:
  - drop EXPORT of of_find_backlight_by_node

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
---
 drivers/video/backlight/backlight.c | 23 +++++++++--------------
 include/linux/backlight.h           | 10 ----------
 2 files changed, 9 insertions(+), 24 deletions(-)

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 06f4da3c58e1..ff84e6607486 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -649,19 +649,9 @@ static int of_parent_match(struct device *dev, const void *data)
 	return dev->parent && dev->parent->of_node == data;
 }
 
-/**
- * of_find_backlight_by_node() - find backlight device by device-tree node
- * @node: device-tree node of the backlight device
- *
- * Returns a pointer to the backlight device corresponding to the given DT
- * node or NULL if no such backlight device exists or if the device hasn't
- * been probed yet.
- *
- * This function obtains a reference on the backlight device and it is the
- * caller's responsibility to drop the reference by calling put_device() on
- * the backlight device's .dev field.
- */
-struct backlight_device *of_find_backlight_by_node(struct device_node *node)
+/* Find backlight device by device-tree node */
+static struct backlight_device *
+of_find_backlight_by_node(struct device_node *node)
 {
 	struct device *dev;
 
@@ -669,7 +659,12 @@ struct backlight_device *of_find_backlight_by_node(struct device_node *node)
 
 	return dev ? to_backlight_device(dev) : NULL;
 }
-EXPORT_SYMBOL(of_find_backlight_by_node);
+#else
+static struct backlight_device *
+of_find_backlight_by_node(struct device_node *node)
+{
+	return NULL;
+}
 #endif
 
 static struct backlight_device *of_find_backlight(struct device *dev)
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 8b43fd90d84a..fa443899b4ee 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -466,16 +466,6 @@ static inline void * bl_get_data(struct backlight_device *bl_dev)
 	return dev_get_drvdata(&bl_dev->dev);
 }
 
-#ifdef CONFIG_OF
-struct backlight_device *of_find_backlight_by_node(struct device_node *node);
-#else
-static inline struct backlight_device *
-of_find_backlight_by_node(struct device_node *node)
-{
-	return NULL;
-}
-#endif
-
 #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
 struct backlight_device *devm_of_find_backlight(struct device *dev);
 #else
-- 
2.25.1