igb: remove unneeded cleaned variable in clean_tx_irq path

The cleaned variable can be replaced by the count of packets cleaned during
the tx interrupt routine so it can be removed.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 634c4c9..03806e2 100644 (file)
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -3617,16 +3617,14 @@ static bool igb_clean_tx_irq(struct igb_ring *tx_ring)
        unsigned int i;
        u32 head, oldhead;
        unsigned int count = 0;
-       bool cleaned = false;
-       bool retval = true;
        unsigned int total_bytes = 0, total_packets = 0;
+       bool retval = true;
 
        rmb();
        head = get_head(tx_ring);
        i = tx_ring->next_to_clean;
        while (1) {
                while (i != head) {
-                       cleaned = true;
                        tx_desc = E1000_TX_DESC(*tx_ring, i);
                        buffer_info = &tx_ring->buffer_info[i];
                        skb = buffer_info->skb;
@@ -3643,7 +3641,6 @@ static bool igb_clean_tx_irq(struct igb_ring *tx_ring)
                        }
 
                        igb_unmap_and_free_tx_resource(adapter, buffer_info);
-                       tx_desc->upper.data = 0;
 
                        i++;
                        if (i == tx_ring->count)
@@ -3665,7 +3662,7 @@ static bool igb_clean_tx_irq(struct igb_ring *tx_ring)
 done_cleaning:
        tx_ring->next_to_clean = i;
 
-       if (unlikely(cleaned &&
+       if (unlikely(count &&
                     netif_carrier_ok(netdev) &&
                     IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) {
                /* Make sure that anybody stopping the queue after this