drm/qxl: only report first monitor as connected if we have no state

If the server isn't new enough to give us state, report the first
monitor as always connected, otherwise believe the server side.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index 7c6225c84ba6745919377fa9bfbd3506a7d8f7e5..dd845f82cc24aaa5b46cf5680ffd607d3a8ebb2b 100644 (file)
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -886,13 +886,15 @@ static enum drm_connector_status qxl_conn_detect(
                drm_connector_to_qxl_output(connector);
        struct drm_device *ddev = connector->dev;
        struct qxl_device *qdev = ddev->dev_private;
-       int connected;
+       bool connected = false;
 
        /* The first monitor is always connected */
-       connected = (output->index == 0) ||
-                   (qdev->client_monitors_config &&
-                    qdev->client_monitors_config->count > output->index &&
-                    qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]));
+       if (!qdev->client_monitors_config) {
+               if (output->index == 0)
+                       connected = true;
+       } else
+               connected = qdev->client_monitors_config->count > output->index &&
+                    qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
 
        DRM_DEBUG("#%d connected: %d\n", output->index, connected);
        if (!connected)