[FB] fb_blank is an fbops hook, not a standalone function.

drivers/video/console/fbcon.c

@@ -1993,7 +1993,7 @@ static int fbcon_blank(struct vc_data *vc, int blank)
 			update_screen(vc->vc_num);
 		return 0;
 	} else
-		return fb_blank(blank, info);
+		return info->fbops->fb_blank(blank, info);
 }
 
 static void fbcon_free_font(struct display *p)

include/linux/fb.h

@@ -449,7 +449,6 @@ struct fb_info {
 
 extern int fb_set_var(struct fb_var_screeninfo *var, struct fb_info *info); 
 extern int fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info); 
-extern int fb_blank(int blank, struct fb_info *info);
 extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor);
 extern void cfb_fillrect(struct fb_info *info, struct fb_fillrect *rect); 
 extern void cfb_copyarea(struct fb_info *info, struct fb_copyarea *area);