gisi: Return negative errnos

diff --git a/gisi/client.c b/gisi/client.c
index d182303..e5af064 100644 (file)
--- a/gisi/client.c
+++ b/gisi/client.c
@@ -475,7 +475,7 @@ int g_isi_subscribe(GIsiClient *client, uint8_t type,
        GIsiIndication **old;
 
        if (cb == NULL)
-               return EINVAL;
+               return -EINVAL;
 
        ind = g_try_new0(GIsiIndication, 1);
        if (!ind)