drm: drop unused 'magicfree' list

This list is write-only. It's never used for read-access, so no reason to
keep it around. Drop it!

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/drm_auth.c

@@ -37,7 +37,6 @@
 #include "drm_internal.h"
 
 struct drm_magic_entry {
-	struct list_head head;
 	struct drm_hash_item hash_item;
 	struct drm_file *priv;
 };
@@ -93,7 +92,6 @@ static int drm_add_magic(struct drm_master *master, struct drm_file *priv,
 	entry->hash_item.key = (unsigned long)magic;
 	mutex_lock(&dev->struct_mutex);
 	drm_ht_insert_item(&master->magiclist, &entry->hash_item);
-	list_add_tail(&entry->head, &master->magicfree);
 	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
@@ -123,7 +121,6 @@ int drm_remove_magic(struct drm_master *master, drm_magic_t magic)
 	}
 	pt = drm_hash_entry(hash, struct drm_magic_entry, hash_item);
 	drm_ht_remove_item(&master->magiclist, hash);
-	list_del(&pt->head);
 	mutex_unlock(&dev->struct_mutex);
 
 	kfree(pt);

drivers/gpu/drm/drm_drv.c

@@ -109,7 +109,6 @@ struct drm_master *drm_master_create(struct drm_minor *minor)
 		kfree(master);
 		return NULL;
 	}
-	INIT_LIST_HEAD(&master->magicfree);
 	master->minor = minor;
 
 	return master;

include/drm/drmP.h

@@ -356,7 +356,6 @@ struct drm_lock_data {
  * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
  * @unique_len: Length of unique field. Protected by drm_global_mutex.
  * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
- * @magicfree: List of used authentication tokens. Protected by struct_mutex.
  * @lock: DRI lock information.
  * @driver_priv: Pointer to driver-private information.
  */
@@ -366,7 +365,6 @@ struct drm_master {
 	char *unique;
 	int unique_len;
 	struct drm_open_hash magiclist;
-	struct list_head magicfree;
 	struct drm_lock_data lock;
 	void *driver_priv;
 };