[ 08/52] ASoC: core: check of_property_count_strings failure

[Greg KH]

3.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>

commit c34ce320d9fe328e3272def20b152f39ccfa045e upstream.

Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 sound/soc/soc-core.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3420,10 +3420,10 @@ int snd_soc_of_parse_audio_routing(struc
 	int i, ret;
 
 	num_routes = of_property_count_strings(np, propname);
-	if (num_routes & 1) {
+	if (num_routes < 0 || num_routes & 1) {
 		dev_err(card->dev,
-			"Property '%s's length is not even\n",
-			propname);
+		     "Property '%s' does not exist or its length is not even\n",
+		     propname);
 		return -EINVAL;
 	}
 	num_routes /= 2;


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