[PATCH 3/9] compressdev: fix null name when parse input args

[Chengwen Feng]

The rte_kvargs_process() was used to parse KV pairs, it also supports
to parse 'only keys' (e.g. socket_id) type. And the callback function
parameter 'value' is NULL when parsed 'only keys'.

If the input args is just "name" (which mean only has keys), then it
will get (null) name in rte_compressdev_pmd_parse_name_arg(). This
patch fixes it.

Fixes: ed7dd94f7f66 ("compressdev: add basic device management")
Cc: stable at dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
---
 lib/compressdev/rte_compressdev_pmd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/compressdev/rte_compressdev_pmd.c b/lib/compressdev/rte_compressdev_pmd.c
index 93c31fbac8..156bccd972 100644
--- a/lib/compressdev/rte_compressdev_pmd.c
+++ b/lib/compressdev/rte_compressdev_pmd.c
@@ -23,6 +23,9 @@ rte_compressdev_pmd_parse_name_arg(const char *key __rte_unused,
 	struct rte_compressdev_pmd_init_params *params = extra_args;
 	int n;
 
+	if (value == NULL || extra_args == NULL)
+		return -EINVAL;
+
 	n = strlcpy(params->name, value, RTE_COMPRESSDEV_NAME_MAX_LEN);
 	if (n >= RTE_COMPRESSDEV_NAME_MAX_LEN)
 		return -EINVAL;
-- 
2.17.1