firewire: Set correct buffer lengths for dualbuffer DMA descriptor.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index b5a154583e0..76ac70a3854 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -1583,10 +1583,7 @@ ohci_queue_iso_receive(struct fw_iso_context *base,
                                           descriptor_branch_always);
                 db->first_size = cpu_to_le16(ctx->base.header_size);
                 db->first_req_count = cpu_to_le16(p->header_length);
-                db->second_req_count = cpu_to_le16(p->payload_length);
-                db->first_res_count = cpu_to_le16(db->first_req_count);
-                db->second_res_count = cpu_to_le16(db->second_req_count);
-
+                db->first_res_count = db->first_req_count;
                 db->first_buffer = cpu_to_le32(d_bus + sizeof *db);
                 
                 if (offset + rest < PAGE_SIZE)
@@ -1594,6 +1591,8 @@ ohci_queue_iso_receive(struct fw_iso_context *base,
                 else
                         length = PAGE_SIZE - offset;
 
+                db->second_req_count = cpu_to_le16(length);
+                db->second_res_count = db->second_req_count;
                 page_bus = page_private(buffer->pages[page]);
                 db->second_buffer = cpu_to_le32(page_bus + offset);