[dpdk-dev] [PATCH] ixgbe: fix icc compile error

[Ferruh Yigit]

Fixes: 06554d381d97 ("ixgbe: speed up non-vector Tx")

icc (icc (ICC) 16.0.1 20151021) is generating following compile error:
"
  CC ixgbe_rxtx.o
  .../drivers/net/ixgbe/ixgbe_rxtx.c(153): error #3656: variable
  "free" may be used before its value is set
                      (nb_free > 0 && m->pool != free[0]->pool)) {
			                         ^
"

Indeed this is a false positive and code is correct.
"nb_free" check prevents the free[] access before its value set.

But the patch is just for compiler to remove compiler error.

Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index ff6ddb8..ef1a26f 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -128,7 +128,8 @@ ixgbe_tx_free_bufs(struct ixgbe_tx_queue *txq)
 	struct ixgbe_tx_entry *txep;
 	uint32_t status;
 	int i, nb_free = 0;
-	struct rte_mbuf *m, *free[RTE_IXGBE_TX_MAX_FREE_BUF_SZ];
+	struct rte_mbuf *m;
+	struct rte_mbuf *free[RTE_IXGBE_TX_MAX_FREE_BUF_SZ] = {0};
 
 	/* check DD bit on threshold descriptor */
 	status = txq->tx_ring[txq->tx_next_dd].wb.status;
-- 
2.5.0