From: Ferruh Yigit <ferruh.yigit@intel.com>
To: dev@dpdk.org
Cc: Ferruh Yigit <ferruh.yigit@intel.com>
Subject: [dpdk-dev] [PATCH] ixgbe: fix icc compile error
Date: Wed, 23 Mar 2016 17:45:58 +0000 [thread overview]
Message-ID: <1458755158-16145-1-git-send-email-ferruh.yigit@intel.com> (raw)
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@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
next reply other threads:[~2016-03-23 17:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-23 17:45 Ferruh Yigit [this message]
2016-03-23 19:35 ` Stephen Hemminger
2016-03-23 21:26 ` Ferruh Yigit
2016-03-24 17:34 ` [dpdk-dev] [PATCH v2] ixgbe: disable icc compile warning Ferruh Yigit
2016-03-24 17:47 ` Ananyev, Konstantin
2016-03-25 13:57 ` Bruce Richardson
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