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-rw-r--r--src/mm-port.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mm-port.c b/src/mm-port.c
index da37f902..7102770d 100644
--- a/src/mm-port.c
+++ b/src/mm-port.c
@@ -132,6 +132,9 @@ log_object_build_id (MMLogObject *_self)
MMPort *self;
self = MM_PORT (_self);
+ if (!self->priv->device || !self->priv->ptype)
+ return NULL;
+
return g_strdup_printf ("%s/%s",
mm_port_get_device (self),
mm_port_type_get_string (mm_port_get_port_type (self)));