Add empty static inline function fallbacks if backlight support
is not enabled, so that drivers using the backlight don't fail to
build.
Fixes:
In function `simple_panel_ioctl':
undefined reference to `of_backlight_find'
undefined reference to `backlight_set_brightness_default'
undefined reference to `backlight_set_brightness'
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
include/video/backlight.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/video/backlight.h b/include/video/backlight.h
index 56e0341ea470..8dc49dc113e3 100644
--- a/include/video/backlight.h
+++ b/include/video/backlight.h
@@ -1,6 +1,7 @@
#ifndef __VIDEO_BACKLIGHT_H
#define __VIDEO_BACKLIGHT_H
+#ifdef CONFIG_DRIVER_VIDEO_BACKLIGHT
struct backlight_device {
int brightness;
int brightness_cur;
@@ -16,5 +17,21 @@ int backlight_set_brightness(struct backlight_device *, int brightness);
int backlight_set_brightness_default(struct backlight_device *);
int backlight_register(struct backlight_device *);
struct backlight_device *of_backlight_find(struct device_node *node);
+#else
+struct backlight_device ;
+
+static inline int
+backlight_set_brightness(struct backlight_device *dev, int brightness)
+{
+ return 0;
+}
+static inline int
+backlight_set_brightness_default(struct backlight_device *dev)
+{
+ return 0;
+}
+static inline struct backlight_device *
+of_backlight_find(struct device_node *node) { return NULL; }
+#endif
#endif /* __VIDEO_BACKLIGHT_H */
--
2.4.6
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