sfc: Reduce the size of struct efx_tx_buffer

Remove unmap_addr since it can be calculated from dma_addr, len and
unmap_len.  This saves 4-16 bytes.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index f539e2e0da1b..6369f9253c7b 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -130,7 +130,6 @@ struct efx_special_buffer {
  *      This field is zero when the queue slot is empty.
  * @continuation: True if this fragment is not the end of a packet.
  * @unmap_single: True if pci_unmap_single should be used.
- * @unmap_addr: DMA address to unmap
  * @unmap_len: Length of this fragment to unmap
  */
 struct efx_tx_buffer {
@@ -140,7 +139,6 @@ struct efx_tx_buffer {
         unsigned short len;
         unsigned char continuation;
         unsigned char unmap_single;
-        dma_addr_t unmap_addr;
         unsigned short unmap_len;
 };