[PATCH v2 39/44] event/dpaa: fix segment fault when parse devargs

[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'.

This patch fixes segment fault when parse input args with 'only keys'.

Fixes: 77b5311d0ece ("event/dpaa: support select based event")
Cc: sta...@dpdk.org

Signed-off-by: Chengwen Feng <fengcheng...@huawei.com>
---
 drivers/event/dpaa/dpaa_eventdev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/event/dpaa/dpaa_eventdev.c 
b/drivers/event/dpaa/dpaa_eventdev.c
index 4b3d16735b..0d5593e862 100644
--- a/drivers/event/dpaa/dpaa_eventdev.c
+++ b/drivers/event/dpaa/dpaa_eventdev.c
@@ -959,6 +959,9 @@ static struct eventdev_ops dpaa_eventdev_ops = {
 static int flag_check_handler(__rte_unused const char *key,
                const char *value, __rte_unused void *opaque)
 {
+       if (value == NULL)
+               return -EINVAL;
+
        if (strcmp(value, "1"))
                return -1;
 
-- 
2.17.1