[mutter] kms: Always predict state after processing update

[Jonas Ådahl <jadahl src gnome org>]

commit 1cc249fe18c8c280d8087642e0ac1f0287c53a64
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Oct 10 10:10:38 2019 +0200

    kms: Always predict state after processing update
    
    Not only mode sets have state that should be predicted; changing gamma
    currently happens with its own update, so we missed predicting that.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/840

 src/backends/native/meta-kms-update-private.h | 2 --
 src/backends/native/meta-kms-update.c         | 6 ------
 src/backends/native/meta-kms.c                | 3 +--
 3 files changed, 1 insertion(+), 10 deletions(-)
---
diff --git a/src/backends/native/meta-kms-update-private.h b/src/backends/native/meta-kms-update-private.h
index 88e2590af..df7737c9b 100644
--- a/src/backends/native/meta-kms-update-private.h
+++ b/src/backends/native/meta-kms-update-private.h
@@ -110,6 +110,4 @@ GList * meta_kms_update_get_connector_properties (MetaKmsUpdate *update);
 
 GList * meta_kms_update_get_crtc_gammas (MetaKmsUpdate *update);
 
-gboolean meta_kms_update_has_mode_set (MetaKmsUpdate *update);
-
 #endif /* META_KMS_UPDATE_PRIVATE_H */
diff --git a/src/backends/native/meta-kms-update.c b/src/backends/native/meta-kms-update.c
index 2a4a05c3e..c946aa7a2 100644
--- a/src/backends/native/meta-kms-update.c
+++ b/src/backends/native/meta-kms-update.c
@@ -282,12 +282,6 @@ meta_kms_update_get_crtc_gammas (MetaKmsUpdate *update)
   return update->crtc_gammas;
 }
 
-gboolean
-meta_kms_update_has_mode_set (MetaKmsUpdate *update)
-{
-  return !!update->mode_sets;
-}
-
 void
 meta_kms_update_seal (MetaKmsUpdate *update)
 {
diff --git a/src/backends/native/meta-kms.c b/src/backends/native/meta-kms.c
index 9485bb4e8..804a1adda 100644
--- a/src/backends/native/meta-kms.c
+++ b/src/backends/native/meta-kms.c
@@ -211,8 +211,7 @@ meta_kms_update_process_in_impl (MetaKmsImpl  *impl,
 
   ret = meta_kms_impl_process_update (impl, update, error);
 
-  if (meta_kms_update_has_mode_set (update))
-    meta_kms_predict_states_in_impl (meta_kms_impl_get_kms (impl), update);
+  meta_kms_predict_states_in_impl (meta_kms_impl_get_kms (impl), update);
 
   return ret;
 }