diff options
| -rw-r--r-- | drivers/firewire/core-transaction.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index 89e310ba03b..190bf61533a 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -602,6 +602,9 @@ EXPORT_SYMBOL(fw_core_add_address_handler); /** * fw_core_remove_address_handler() - unregister an address handler + * + * When fw_core_remove_address_handler() returns, @handler->callback() is + * guaranteed to not run on any CPU anymore. */ void fw_core_remove_address_handler(struct fw_address_handler *handler) { @@ -838,16 +841,16 @@ static void handle_exclusive_region_request(struct fw_card *card, spin_lock_irqsave(&address_handler_lock, flags); handler = lookup_enclosing_address_handler(&address_handler_list, offset, request->length); - spin_unlock_irqrestore(&address_handler_lock, flags); - - if (handler == NULL) - fw_send_response(card, request, RCODE_ADDRESS_ERROR); - else + if (handler) handler->address_callback(card, request, tcode, destination, source, p->generation, offset, request->data, request->length, handler->callback_data); + spin_unlock_irqrestore(&address_handler_lock, flags); + + if (!handler) + fw_send_response(card, request, RCODE_ADDRESS_ERROR); } static void handle_fcp_region_request(struct fw_card *card, |