net/ena: fix build for O1 optimization

Can be reproduced with "make EXTRA_CFLAGS='-O1'" command using
gcc (GCC) 9.3.1 20200408 (Red Hat 9.3.1-2)

Build error:
.../drivers/net/ena/ena_ethdev.c: In function ‘eth_ena_dev_init’:
.../drivers/net/ena/ena_ethdev.c:1815:20:
    error: ‘wd_state’ may be used uninitialized in this function
           [-Werror=maybe-uninitialized]
 1815 |  adapter->wd_state = wd_state;
      |  ~~~~~~~~~~~~~~~~~~^~~~~~~~~~

This looks like false positive, fixing by assigning initial value to
'wd_state' variable.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Michal Krawczyk <mk@semihalf.com>

diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index c3fd3a4..fbddc79 100644 (file)
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -1756,7 +1756,7 @@ static int eth_ena_dev_init(struct rte_eth_dev *eth_dev)
        int rc;
        static int adapters_found;
        bool disable_meta_caching;
-       bool wd_state;
+       bool wd_state = false;
 
        eth_dev->dev_ops = &ena_dev_ops;
        eth_dev->rx_pkt_burst = &eth_ena_recv_pkts;