fix only one start scan request

diff --git a/src/kds_s2000w_net.c b/src/kds_s2000w_net.c
index 6a71f8f38feb328a6bec83df41f95834469b2ccb..8922ab2a31d480af6899469a5fc5b4d9d46d235c 100644 (file)
--- a/src/kds_s2000w_net.c
+++ b/src/kds_s2000w_net.c
@@ -181,9 +181,11 @@ SANE_Status _sane_kds_s2000w_net_start(SANE_Handle handle)
 {
        debug_printf(ALL, "sane_kds_s2000w_net_start");
        handler* h = (handler*) handle;
-       h->read_info->cancel = 0;
-       h->read_info->scan_started = 1;
-       kds_s2000w_handler_start_scan(handle);
+       if (!h->read_info->scan_started) {
+               h->read_info->cancel = 0;
+               h->read_info->scan_started = 1;
+               kds_s2000w_handler_start_scan(handle);
+       }
        return SANE_STATUS_GOOD;
 }