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>
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index b5a1545..76ac70a 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -1583,10 +1583,7 @@
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 @@
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);