firewire: remove superfluous reference counting

The card->kref became obsolete since patch "firewire: fix crash in
automatic module unloading" added another counter of card users.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>

drivers/firewire/fw-card.c

@@ -398,7 +398,6 @@ fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
 {
 	static atomic_t index = ATOMIC_INIT(-1);
 
-	kref_init(&card->kref);
 	atomic_set(&card->device_count, 0);
 	card->index = atomic_inc_return(&index);
 	card->driver = driver;
@@ -429,12 +428,6 @@ fw_card_add(struct fw_card *card,
 	card->link_speed = link_speed;
 	card->guid = guid;
 
-	/*
-	 * The subsystem grabs a reference when the card is added and
-	 * drops it when the driver calls fw_core_remove_card.
-	 */
-	fw_card_get(card);
-
 	mutex_lock(&card_mutex);
 	config_rom = generate_config_rom(card, &length);
 	list_add_tail(&card->link, &card_list);
@@ -540,40 +533,9 @@ fw_core_remove_card(struct fw_card *card)
 	cancel_delayed_work_sync(&card->work);
 	fw_flush_transactions(card);
 	del_timer_sync(&card->flush_timer);
-
-	fw_card_put(card);
 }
 EXPORT_SYMBOL(fw_core_remove_card);
 
-struct fw_card *
-fw_card_get(struct fw_card *card)
-{
-	kref_get(&card->kref);
-
-	return card;
-}
-EXPORT_SYMBOL(fw_card_get);
-
-static void
-release_card(struct kref *kref)
-{
-	struct fw_card *card = container_of(kref, struct fw_card, kref);
-
-	kfree(card);
-}
-
-/*
- * An assumption for fw_card_put() is that the card driver allocates
- * the fw_card struct with kalloc and that it has been shut down
- * before the last ref is dropped.
- */
-void
-fw_card_put(struct fw_card *card)
-{
-	kref_put(&card->kref, release_card);
-}
-EXPORT_SYMBOL(fw_card_put);
-
 int
 fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
 {