rigol-ds: Deal with dev_close() getting called multiple times.

diff --git a/hardware/rigol-ds/api.c b/hardware/rigol-ds/api.c
index 76c2efc7c811d91fd6c9b9944845d0afc39719b5..f61d58ca1e01993ac656fe6eb34fc6c5a3bb2fc2 100644 (file)
--- a/hardware/rigol-ds/api.c
+++ b/hardware/rigol-ds/api.c
@@ -482,6 +482,9 @@ static int dev_close(struct sr_dev_inst *sdi)
        struct sr_scpi_dev_inst *scpi;
        struct dev_context *devc;
 
+       if (sdi->status != SR_ST_INACTIVE)
+               return SR_OK;
+
        scpi = sdi->conn;
        devc = sdi->priv;