[PATCH v2 13/16] backlight: make of_find_backlight static

[Sam Ravnborg <sam@ravnborg.org>]

There are no external users of of_find_backlight,
as they have all changed to use the managed version.
Make of_find_backlight static to prevent new external users.

Signed-off-by: Sam Ravnborg <sam@ravnborg.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 | 31 ++++++++++-------------------
 include/linux/backlight.h           |  6 ------
 2 files changed, 11 insertions(+), 26 deletions(-)

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 2212f0e3570e..e23b09d03a65 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -650,22 +650,7 @@ struct backlight_device *of_find_backlight_by_node(struct device_node *node)
 EXPORT_SYMBOL(of_find_backlight_by_node);
 #endif
 
-/**
- * of_find_backlight - Get backlight device
- * @dev: Device
- *
- * This function looks for a property named 'backlight' on the DT node
- * connected to @dev and looks up the backlight device.
- *
- * Call backlight_put() to drop the reference on the backlight device.
- *
- * Returns:
- * A pointer to the backlight device if found.
- * Error pointer -EPROBE_DEFER if the DT property is set, but no backlight
- * device is found.
- * NULL if there's no backlight property.
- */
-struct backlight_device *of_find_backlight(struct device *dev)
+static struct backlight_device *of_find_backlight(struct device *dev)
 {
 	struct backlight_device *bd = NULL;
 	struct device_node *np;
@@ -691,7 +676,6 @@ struct backlight_device *of_find_backlight(struct device *dev)
 
 	return bd;
 }
-EXPORT_SYMBOL(of_find_backlight);
 
 static void devm_backlight_release(void *data)
 {
@@ -702,9 +686,16 @@ static void devm_backlight_release(void *data)
  * devm_of_find_backlight - find backlight for a device
  * @dev: the device
  *
- * Device managed version of of_find_backlight().
- * The reference on the backlight device is automatically
- * dropped on driver detach.
+ * This function looks for a property named 'backlight' on the DT node
+ * connected to @dev and looks up the backlight device.
+ * The lookup is device managed so the reference to the backlight device
+ * is automatically dropped on driver detach.
+ *
+ * Returns:
+ * A pointer to the backlight device if found.
+ * Error pointer -EPROBE_DEFER if the DT property is set, but no backlight
+ * device is found.
+ * NULL if there's no backlight property.
  */
 struct backlight_device *devm_of_find_backlight(struct device *dev)
 {
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 308aec67fa4f..99e7cdace2be 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -494,14 +494,8 @@ of_find_backlight_by_node(struct device_node *node)
 #endif
 
 #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
-struct backlight_device *of_find_backlight(struct device *dev);
 struct backlight_device *devm_of_find_backlight(struct device *dev);
 #else
-static inline struct backlight_device *of_find_backlight(struct device *dev)
-{
-	return NULL;
-}
-
 static inline struct backlight_device *
 devm_of_find_backlight(struct device *dev)
 {
-- 
2.25.1