[Skiboot] [RFC PATCH 2/7] core/device: NULL pointer dereference fix

[Nicholas Piggin]

This was caught with unmapped memory dereference page faults.

Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
---
 core/device.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/device.c b/core/device.c
index 19a8d8d6..6364a60e 100644
--- a/core/device.c
+++ b/core/device.c
@@ -494,7 +494,10 @@ struct dt_property *dt_add_property_string(struct dt_node *node,
 					   const char *name,
 					   const char *value)
 {
-	return dt_add_property(node, name, value, strlen(value)+1);
+	size_t len = 0;
+	if (value)
+		len = strlen(value) + 1;
+	return dt_add_property(node, name, value, len);
 }
 
 struct dt_property *dt_add_property_nstr(struct dt_node *node,
-- 
2.18.0