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net/mlx5: fix an uninitialized variable

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Since patch "mbuf: structure reorganization" the compiler complains
sometimes (in some conditions):

 .../drivers/net/mlx5/mlx5_rxtx.c: In function ‘mlx5_rx_burst’:
 .../drivers/net/mlx5/mlx5_rxtx.c:2082:17: error: ‘len’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]

len is not initialised as it will be at the first segment of a received
packet, but it remains hard for the compiler to determine it.

Fixes: 9964b965ad ("net/mlx5: re-add Rx scatter support")
Cc: stable@dpdk.org

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
This commit is contained in:
Nelio Laranjeiro 2017-04-06 11:16:32 +02:00 committed by Thomas Monjalon
parent 8b2928c978
commit 4e66a6fef3
1 changed files with 1 additions and 1 deletions
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2
drivers/net/mlx5/mlx5_rxtx.c
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@ -1972,7 +1972,7 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
&(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
unsigned int i = 0;
unsigned int rq_ci = rxq->rq_ci << sges_n;
int len; /* keep its value across iterations. */
int len = 0; /* keep its value across iterations. */
while (pkts_n) {
unsigned int idx = rq_ci & wqe_cnt;