[mutter] cursor-rendere-native: Don't declare HW cursors broken on EACCES

[Jonas Ådahl <jadahl src gnome org>]

commit 3244ed37a9f7666c6d74ab9158f768a73e1068df
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Jul 24 11:44:57 2017 +0800

    cursor-rendere-native: Don't declare HW cursors broken on EACCES
    
    Don't permanently fall back to OpenGL based cursor rendering when
    setting the HW cursor fails with EACCES as that may happen on VT
    switching and other things temporarily revoking fd access.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=785381

 src/backends/native/meta-cursor-renderer-native.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)
---
diff --git a/src/backends/native/meta-cursor-renderer-native.c 
b/src/backends/native/meta-cursor-renderer-native.c
index 4ce7592..a12e706 100644
--- a/src/backends/native/meta-cursor-renderer-native.c
+++ b/src/backends/native/meta-cursor-renderer-native.c
@@ -201,11 +201,14 @@ set_crtc_cursor (MetaCursorRendererNative *native,
                              priv->cursor_width, priv->cursor_height,
                              hot_x, hot_y) < 0)
         {
-          g_warning ("drmModeSetCursor2 failed with (%s), "
-                     "drawing cursor with OpenGL from now on",
-                     strerror (errno));
-          priv->has_hw_cursor = FALSE;
-          priv->hw_cursor_broken = TRUE;
+          if (errno != EACCES)
+            {
+              g_warning ("drmModeSetCursor2 failed with (%s), "
+                         "drawing cursor with OpenGL from now on",
+                         strerror (errno));
+              priv->has_hw_cursor = FALSE;
+              priv->hw_cursor_broken = TRUE;
+            }
         }
 
       if (cursor_priv->pending_bo_state == META_CURSOR_GBM_BO_STATE_SET)