net/bnxt: fix compilation with -Og

The compilation with gcc-6.3.0 and EXTRA_CFLAGS=-Og gives the following
error:

  CC rte_pmd_bnxt.o
  rte_pmd_bnxt.c: In function ‘rte_pmd_bnxt_set_all_queues_drop_en’:
  rte_pmd_bnxt.c:116:6: error: ‘rc’ may be used uninitialized in this
                        function [-Werror=maybe-uninitialized]
    int rc;
        ^~

This can happen if both bp->nr_vnics and bp->pf.active_vfs are 0.
Fix it by initializing rc to -EINVAL.

Fixes: 49947a13ba9e ("net/bnxt: support Tx loopback, set VF MAC and queues drop")
Cc: stable@dpdk.org
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/drivers/net/bnxt/rte_pmd_bnxt.c b/drivers/net/bnxt/rte_pmd_bnxt.c
index 82b9bac..c230717 100644 (file)
--- a/drivers/net/bnxt/rte_pmd_bnxt.c
+++ b/drivers/net/bnxt/rte_pmd_bnxt.c
@@ -113,7 +113,7 @@ int rte_pmd_bnxt_set_all_queues_drop_en(uint8_t port, uint8_t on)
        struct rte_eth_dev *eth_dev;
        struct bnxt *bp;
        uint32_t i;
-       int rc;
+       int rc = -EINVAL;
 
        RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);