drm: Constify struct drm_info_list * arguments

Those functions are just reading data from those pointers.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_debugfs.c

@@ -84,7 +84,7 @@ static const struct file_operations drm_debugfs_fops = {
  * Create a given set of debugfs files represented by an array of
  * gdm_debugfs_lists in the given root directory.
  */
-int drm_debugfs_create_files(struct drm_info_list *files, int count,
+int drm_debugfs_create_files(const struct drm_info_list *files, int count,
 			     struct dentry *root, struct drm_minor *minor)
 {
 	struct drm_device *dev = minor->dev;
@@ -188,7 +188,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
  *
  * Remove all debugfs entries created by debugfs_init().
  */
-int drm_debugfs_remove_files(struct drm_info_list *files, int count,
+int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
 			     struct drm_minor *minor)
 {
 	struct list_head *pos, *q;

include/drm/drmP.h

@@ -1477,10 +1477,11 @@ extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
 #if defined(CONFIG_DEBUG_FS)
 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 			    struct dentry *root);
-extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
-				    struct dentry *root, struct drm_minor *minor);
-extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
-                                    struct drm_minor *minor);
+extern int drm_debugfs_create_files(const struct drm_info_list *files,
+				    int count, struct dentry *root,
+				    struct drm_minor *minor);
+extern int drm_debugfs_remove_files(const struct drm_info_list *files,
+				    int count, struct drm_minor *minor);
 extern int drm_debugfs_cleanup(struct drm_minor *minor);
 #endif