firewire: improve refcounting of fw_card

Take a reference to the card whenever fw_card_bm_work() is scheduled on
that card and release it when the work is done.  This allows us to
remove the cancel_delayed_work_sync() in fw_core_remove_card().

Signed-off-by: Jay Fenlason <fenlason@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (patch update)

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
index 839466f0a795..0497a18dc59e 100644
--- a/drivers/firewire/fw-transaction.h
+++ b/drivers/firewire/fw-transaction.h
@@ -278,6 +278,8 @@ static inline void fw_card_put(struct fw_card *card)
         kref_put(&card->kref, fw_card_release);
 }
 
+extern void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
+
 /*
  * The iso packet format allows for an immediate header/payload part
  * stored in 'header' immediately after the packet info plus an