[dpdk-dev] [PATCH] net/ixgbe: fix missing NULL point check

[Qi Zhang]

Add missing NULL point check in ixgbe_pf_host_uninit, or it may cause
segement fault when detach a device. 

Fixes: cf80ba6e2038 ("net/ixgbe: add support for representor ports")
Cc: sta...@dpdk.org

Signed-off-by: Qi Zhang <qi.z.zh...@intel.com>
---
 drivers/net/ixgbe/ixgbe_pf.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index 4d199c8..73f0e43 100644
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -128,21 +128,24 @@ void ixgbe_pf_host_uninit(struct rte_eth_dev *eth_dev)
 
        PMD_INIT_FUNC_TRACE();
 
-       vfinfo = IXGBE_DEV_PRIVATE_TO_P_VFDATA(eth_dev->data->dev_private);
-
        RTE_ETH_DEV_SRIOV(eth_dev).active = 0;
        RTE_ETH_DEV_SRIOV(eth_dev).nb_q_per_pool = 0;
        RTE_ETH_DEV_SRIOV(eth_dev).def_vmdq_idx = 0;
        RTE_ETH_DEV_SRIOV(eth_dev).def_pool_q_idx = 0;
 
-       ret = rte_eth_switch_domain_free((*vfinfo)->switch_domain_id);
-       if (ret)
-               PMD_INIT_LOG(WARNING, "failed to free switch domain: %d", ret);
-
        vf_num = dev_num_vf(eth_dev);
        if (vf_num == 0)
                return;
 
+       vfinfo = IXGBE_DEV_PRIVATE_TO_P_VFDATA(eth_dev->data->dev_private);
+
+       if (*vfinfo == NULL)
+               return;
+
+       ret = rte_eth_switch_domain_free((*vfinfo)->switch_domain_id);
+       if (ret)
+               PMD_INIT_LOG(WARNING, "failed to free switch domain: %d", ret);
+
        rte_free(*vfinfo);
        *vfinfo = NULL;
 }
-- 
2.5.5