net/ifc: add devargs pointer check

We need to check devargs pointer before dereference it, if no devargs
specified then this driver just skips the device.

Fixes: 40ef35f4a504 ("net/ifc: detect if VDPA mode is specified")
Cc: stable@dpdk.org
Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/ifc/ifcvf_vdpa.c b/drivers/net/ifc/ifcvf_vdpa.c
index e590840..8de9ef1 100644 (file)
--- a/drivers/net/ifc/ifcvf_vdpa.c
+++ b/drivers/net/ifc/ifcvf_vdpa.c
@@ -1114,6 +1114,9 @@ ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
        if (rte_eal_process_type() != RTE_PROC_PRIMARY)
                return 0;
 
+       if (!pci_dev->device.devargs)
+               return 1;
+
        kvlist = rte_kvargs_parse(pci_dev->device.devargs->args,
                        ifcvf_valid_arguments);
        if (kvlist == NULL)