firewire: normalize status values in packet callbacks
core-transaction.c transmit_complete_callback() and close_transaction()
expect packet callback status to be an ACK or RCODE, and ACKs get
translated to RCODEs for transaction callbacks.
An old comment on the packet callback API (been there from the initial
submission of the stack) and the dummy_driver implementation of
send_request/send_response deviated from this as they also included
-ERRNO in the range of status values.
Let's narrow status values down to ACK and RCODE to prevent surprises.
RCODE_CANCELLED is chosen as the dummy_driver's RCODE as its meaning of
"transaction timed out" comes closest to what happens when a transaction
coincides with card removal.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index 2bb5c03..0c312c4 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -570,12 +570,12 @@
static void dummy_send_request(struct fw_card *card, struct fw_packet *packet)
{
- packet->callback(packet, card, -ENODEV);
+ packet->callback(packet, card, RCODE_CANCELLED);
}
static void dummy_send_response(struct fw_card *card, struct fw_packet *packet)
{
- packet->callback(packet, card, -ENODEV);
+ packet->callback(packet, card, RCODE_CANCELLED);
}
static int dummy_cancel_packet(struct fw_card *card, struct fw_packet *packet)