[patch v2 net-next] sfc: remove unneeded variable

[Dan Carpenter]

We don't use ->heap_buf after commit 46d1efd852cc ("sfc: remove Software
TSO") so let's remove the last traces.

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/net/ethernet/sfc/net_driver.h 
b/drivers/net/ethernet/sfc/net_driver.h
index f97f828..18aceb2 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -139,8 +139,6 @@ struct efx_special_buffer {
  * struct efx_tx_buffer - buffer state for a TX descriptor
  * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be
  *     freed when descriptor completes
- * @heap_buf: When @flags & %EFX_TX_BUF_HEAP, the associated heap buffer to be
- *     freed when descriptor completes.
  * @option: When @flags & %EFX_TX_BUF_OPTION, a NIC-specific option descriptor.
  * @dma_addr: DMA address of the fragment.
  * @flags: Flags for allocation and DMA mapping type
@@ -151,10 +149,7 @@ struct efx_special_buffer {
  * Only valid if @unmap_len != 0.
  */
 struct efx_tx_buffer {
-       union {
-               const struct sk_buff *skb;
-               void *heap_buf;
-       };
+       const struct sk_buff *skb;
        union {
                efx_qword_t option;
                dma_addr_t dma_addr;
@@ -166,7 +161,6 @@ struct efx_tx_buffer {
 };
 #define EFX_TX_BUF_CONT                1       /* not last descriptor of 
packet */
 #define EFX_TX_BUF_SKB         2       /* buffer is last part of skb */
-#define EFX_TX_BUF_HEAP                4       /* buffer was allocated with 
kmalloc() */
 #define EFX_TX_BUF_MAP_SINGLE  8       /* buffer was mapped with 
dma_map_single() */
 #define EFX_TX_BUF_OPTION      0x10    /* empty buffer for option descriptor */
 
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 1aa728c..bb07034 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -84,8 +84,6 @@ static void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
                netif_vdbg(tx_queue->efx, tx_done, tx_queue->efx->net_dev,
                           "TX queue %d transmission id %x complete\n",
                           tx_queue->queue, tx_queue->read_count);
-       } else if (buffer->flags & EFX_TX_BUF_HEAP) {
-               kfree(buffer->heap_buf);
        }
 
        buffer->len = 0;