vmwgfx: Free prefered mode on error path

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 41a905d6c4f1ef5dafc6badd474ac6ea98048c94..667437b037f308f254ffbcd56ca27fd341363758 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1710,17 +1710,22 @@ int vmw_du_connector_fill_modes(struct drm_connector *connector,
                mode->hdisplay = du->pref_width;
                mode->vdisplay = du->pref_height;
                vmw_guess_mode_timing(mode);
+
                if (vmw_kms_validate_mode_vram(dev_priv, mode->hdisplay * 2,
                                               mode->vdisplay)) {
                        drm_mode_probed_add(connector, mode);
+               } else {
+                       drm_mode_destroy(dev, mode);
+                       mode = NULL;
+               }
 
-                       if (du->pref_mode) {
-                               list_del_init(&du->pref_mode->head);
-                               drm_mode_destroy(dev, du->pref_mode);
-                       }
-
-                       du->pref_mode = mode;
+               if (du->pref_mode) {
+                       list_del_init(&du->pref_mode->head);
+                       drm_mode_destroy(dev, du->pref_mode);
                }
+
+               /* mode might be null here, this is intended */
+               du->pref_mode = mode;
        }
 
        for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {