Fix CONFIG_BACKLIGHT warnings.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12393 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 7 insertions, 4 deletions

diff --git a/firmware/export/backlight.h b/firmware/export/backlight.h
index 1cd6c47f36..2873666dd8 100644
--- a/firmware/export/backlight.h
+++ b/firmware/export/backlight.h
@@ -26,7 +26,7 @@ void backlight_on(void);
 void backlight_off(void);
 void backlight_set_timeout(int index);
 
-#ifdef CONFIG_BACKLIGHT
+#if CONFIG_BACKLIGHT
 void backlight_init(void);
 
 #if defined(IAUDIO_X5) && !defined(SIMULATOR)
@@ -54,7 +54,7 @@ void lcd_set_sleep_after_backlight_off(int index);
 extern const signed char lcd_sleep_timeout_value[];
 #endif
 
-#else /* ndef CONFIG_BACKLIGHT */
+#else /* CONFIG_BACKLIGHT == 0 */
 #define backlight_init()
 #endif /* CONFIG_BACKLIGHT */
 
diff --git a/firmware/export/button.h b/firmware/export/button.h
index 102d542d27..ea3effcaba 100644
--- a/firmware/export/button.h
+++ b/firmware/export/button.h
@@ -1,4 +1,3 @@
-
 /***************************************************************************
  *             __________               __   ___.
  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
@@ -34,7 +33,7 @@ void button_clear_queue(void);
 #ifdef HAVE_LCD_BITMAP
 void button_set_flip(bool flip); /* turn 180 degrees */
 #endif
-#ifdef CONFIG_BACKLIGHT
+#if CONFIG_BACKLIGHT
 void set_backlight_filter_keypress(bool value);
 #ifdef HAVE_REMOTE_LCD
 void set_remote_backlight_filter_keypress(bool value);
diff --git a/firmware/export/config.h b/firmware/export/config.h
index 8283b37fc8..1a3e0be325 100644
--- a/firmware/export/config.h
+++ b/firmware/export/config.h
@@ -230,6 +230,10 @@
 #define CONFIG_LED 0
 #endif
 
+#ifndef CONFIG_BACKLIGHT
+#define CONFIG_BACKLIGHT 0
+#endif
+
 #ifndef CONFIG_CHARGING
 #define CONFIG_CHARGING 0
 #endif