tg3: Fix tg3_skb_error_unmap()

This function attempts to free one fragment beyond the number of
fragments that were actually mapped.  This patch brings back the limit
to the correct spot.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index f4b01c6..a1f9f9e 100644 (file)
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -5774,7 +5774,7 @@ static void tg3_skb_error_unmap(struct tg3_napi *tnapi,
                         dma_unmap_addr(txb, mapping),
                         skb_headlen(skb),
                         PCI_DMA_TODEVICE);
-       for (i = 0; i <= last; i++) {
+       for (i = 0; i < last; i++) {
                skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                entry = NEXT_TX(entry);