diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c
index 53427a7..61fc6cd 100644
--- a/drivers/video/modedb.c
+++ b/drivers/video/modedb.c
@@ -668,7 +668,7 @@
  * @var: pointer to struct fb_var_screeninfo
  */
 void fb_var_to_videomode(struct fb_videomode *mode,
-			 struct fb_var_screeninfo *var)
+			 const struct fb_var_screeninfo *var)
 {
 	u32 pixclock, hfreq, htotal, vtotal;
 
@@ -712,7 +712,7 @@
  * @mode: pointer to struct fb_videomode
  */
 void fb_videomode_to_var(struct fb_var_screeninfo *var,
-			       struct fb_videomode *mode)
+			 const struct fb_videomode *mode)
 {
 	var->xres = mode->xres;
 	var->yres = mode->yres;
@@ -735,8 +735,8 @@
  * RETURNS:
  * 1 if equal, 0 if not
  */
-int fb_mode_is_equal(struct fb_videomode *mode1,
-		     struct fb_videomode *mode2)
+int fb_mode_is_equal(const struct fb_videomode *mode1,
+		     const struct fb_videomode *mode2)
 {
 	return (mode1->xres         == mode2->xres &&
 		mode1->yres         == mode2->yres &&
@@ -768,8 +768,8 @@
  * var->xres and var->yres.  If more than 1 videomode is found, will return
  * the videomode with the highest refresh rate
  */
-struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
-				       struct list_head *head)
+const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
+					     struct list_head *head)
 {
 	struct list_head *pos;
 	struct fb_modelist *modelist;
@@ -806,8 +806,8 @@
  * If more than 1 videomode is found, will return the videomode with
  * the closest refresh rate.
  */
-struct fb_videomode *fb_find_nearest_mode(struct fb_videomode *mode,
-					  struct list_head *head)
+const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
+					        struct list_head *head)
 {
 	struct list_head *pos;
 	struct fb_modelist *modelist;
@@ -845,8 +845,8 @@
  * RETURNS:
  * struct fb_videomode, NULL if none found
  */
-struct fb_videomode *fb_match_mode(struct fb_var_screeninfo *var,
-				   struct list_head *head)
+const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
+					 struct list_head *head)
 {
 	struct list_head *pos;
 	struct fb_modelist *modelist;
@@ -870,7 +870,7 @@
  * NOTES:
  * Will only add unmatched mode entries
  */
-int fb_add_videomode(struct fb_videomode *mode, struct list_head *head)
+int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
 {
 	struct list_head *pos;
 	struct fb_modelist *modelist;
@@ -905,7 +905,8 @@
  * NOTES:
  * Will remove all matching mode entries
  */
-void fb_delete_videomode(struct fb_videomode *mode, struct list_head *head)
+void fb_delete_videomode(const struct fb_videomode *mode,
+			 struct list_head *head)
 {
 	struct list_head *pos, *n;
 	struct fb_modelist *modelist;
@@ -941,7 +942,7 @@
  * @num: number of entries in array
  * @head: struct list_head of modelist
  */
-void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
+void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
 			      struct list_head *head)
 {
 	int i;
@@ -954,12 +955,12 @@
 	}
 }
 
-struct fb_videomode *fb_find_best_display(struct fb_monspecs *specs,
-					  struct list_head *head)
+const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
+					        struct list_head *head)
 {
 	struct list_head *pos;
 	struct fb_modelist *modelist;
-	struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
+	const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
 	int first = 0;
 
 	if (!head->prev || !head->next || list_empty(head))