From: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Date: Wed, 25 Feb 2015 12:41:24 +0000 (+0100)
Subject: kvargs: fix freeing behaviour for null
X-Git-Tag: spdx-start~9500
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c34af7424e09;p=dpdk.git

kvargs: fix freeing behaviour for null

By convention free() functions should ignore NULL parameter. This patch
add this behaviour for rte_kvargs_free().

Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
---

diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
index 8bc1e46117..c2dd051336 100644
--- a/lib/librte_kvargs/rte_kvargs.c
+++ b/lib/librte_kvargs/rte_kvargs.c
@@ -174,8 +174,12 @@ rte_kvargs_process(const struct rte_kvargs *kvlist,
 void
 rte_kvargs_free(struct rte_kvargs *kvlist)
 {
+	if (!kvlist)
+		return;
+
 	if (kvlist->str != NULL)
 		free(kvlist->str);
+
 	free(kvlist);
 }
 
diff --git a/lib/librte_kvargs/rte_kvargs.h b/lib/librte_kvargs/rte_kvargs.h
index ef4efabfb5..ae9ae79f21 100644
--- a/lib/librte_kvargs/rte_kvargs.h
+++ b/lib/librte_kvargs/rte_kvargs.h
@@ -115,7 +115,8 @@ void rte_kvargs_free(struct rte_kvargs *kvlist);
  *
  * For each key/value association that matches the given key, calls the
  * handler function with the for a given arg_name passing the value on the
- * dictionary for that key and a given extra argument.
+ * dictionary for that key and a given extra argument. If *kvlist* is NULL
+ * function does nothing.
  *
  * @param kvlist
  *   The rte_kvargs structure