diff options
| -rw-r--r-- | drivers/firewire/sbp2.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c index 7aef911fdc71..c7fc78c23978 100644 --- a/drivers/firewire/sbp2.c +++ b/drivers/firewire/sbp2.c @@ -689,14 +689,12 @@ static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu) static inline void sbp2_allow_block(struct sbp2_logical_unit *lu) { - /* - * We may access dont_block without taking card->lock here: - * All callers of sbp2_allow_block() and all callers of sbp2_unblock() - * are currently serialized against each other. - * And a wrong result in sbp2_conditionally_block()'s access of - * dont_block is rather harmless, it simply misses its first chance. - */ - --lu->tgt->dont_block; + struct sbp2_target *tgt = lu->tgt; + struct fw_card *card = target_parent_device(tgt)->card; + + spin_lock_irq(&card->lock); + --tgt->dont_block; + spin_unlock_irq(&card->lock); } /* |