firewire: core: optimize Topology Map creation

[deliverable/linux.git] / drivers / firewire / core-transaction.c

diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index da628c72a4621da3db2cdaf1cd564a555d5dde3f..203e6428bada373f1b649eec7cc4b8ff816136e7 100644 (file)
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -810,8 +810,7 @@ static void handle_topology_map(struct fw_card *card, struct fw_request *request
                int speed, unsigned long long offset,
                void *payload, size_t length, void *callback_data)
 {
-       int i, start, end;
-       __be32 *map;
+       int start;
 
        if (!TCODE_IS_READ_REQUEST(tcode)) {
                fw_send_response(card, request, RCODE_TYPE_ERROR);
@@ -824,11 +823,7 @@ static void handle_topology_map(struct fw_card *card, struct fw_request *request
        }
 
        start = (offset - topology_map_region.start) / 4;
-       end = start + length / 4;
-       map = payload;
-
-       for (i = 0; i < length / 4; i++)
-               map[i] = cpu_to_be32(card->topology_map[start + i]);
+       memcpy(payload, &card->topology_map[start], length);
 
        fw_send_response(card, request, RCODE_COMPLETE);
 }