firewire: move rcode_string() to core
There is nothing audio-specific about the rcode_string() helper, so move
it from snd-firewire-lib into firewire-core to allow other code to use it.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (fixed sound/firewire/cmp.c)
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index dea2dcc..1c4980c 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -994,6 +994,32 @@
}
EXPORT_SYMBOL(fw_core_handle_response);
+/**
+ * fw_rcode_string - convert a firewire result code to an error description
+ * @rcode: the result code
+ */
+const char *fw_rcode_string(int rcode)
+{
+ static const char *const names[] = {
+ [RCODE_COMPLETE] = "no error",
+ [RCODE_CONFLICT_ERROR] = "conflict error",
+ [RCODE_DATA_ERROR] = "data error",
+ [RCODE_TYPE_ERROR] = "type error",
+ [RCODE_ADDRESS_ERROR] = "address error",
+ [RCODE_SEND_ERROR] = "send error",
+ [RCODE_CANCELLED] = "timeout",
+ [RCODE_BUSY] = "busy",
+ [RCODE_GENERATION] = "bus reset",
+ [RCODE_NO_ACK] = "no ack",
+ };
+
+ if ((unsigned int)rcode < ARRAY_SIZE(names) && names[rcode])
+ return names[rcode];
+ else
+ return "unknown";
+}
+EXPORT_SYMBOL(fw_rcode_string);
+
static const struct fw_address_region topology_map_region =
{ .start = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP,
.end = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP_END, };
