From 1bc542f07dad5cbcf38851dd6b0f2ca3bafef5b5 Mon Sep 17 00:00:00 2001
From: Martin Stransky <stransky@redhat.com>
Date: Oct 02 2020 10:27:34 +0000
Subject: Add fix for mozbz#1668771


---

diff --git a/firefox.spec b/firefox.spec
index 05c4dd0..e4a2d18 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -110,7 +110,7 @@ ExcludeArch: s390x
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
 Version:        81.0.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Source0:        https://archive.mozilla.org/pub/firefox/releases/%{version}%{?pre_version}/source/firefox-%{version}%{?pre_version}.source.tar.xz
@@ -178,6 +178,7 @@ Patch407:        mozilla-1667096.patch
 Patch408:        mozilla-1663844.patch
 Patch409:        mozilla-1640567.patch
 Patch410:        mozilla-1661192.patch
+Patch411:        mozilla-1668771.patch
 
 # Wayland specific upstream patches
 Patch574:        firefox-pipewire-0-2.patch
@@ -389,6 +390,7 @@ This package contains results of tests executed during build.
 %patch408 -p1 -b .1663844
 %patch409 -p1 -b .1640567
 %patch410 -p1 -b .1661192
+%patch411 -p1 -b .1668771
 
 # Wayland specific upstream patches
 %if 0%{?fedora} < 32
@@ -978,6 +980,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Thu Oct 2 2020 Martin Stransky <stransky@redhat.com> - 81.0.1-4
+- Added fix for mozbz#1668771
+
 * Thu Oct 1 2020 Martin Stransky <stransky@redhat.com> - 81.0.1-3
 - Added fix for mozbz#1661192
 
diff --git a/mozilla-1668771.patch b/mozilla-1668771.patch
new file mode 100644
index 0000000..4b3cb3e
--- /dev/null
+++ b/mozilla-1668771.patch
@@ -0,0 +1,41 @@
+changeset:   552978:b50cb0696eef
+tag:         tip
+parent:      552976:2ce12e3e063c
+user:        stransky <stransky@redhat.com>
+date:        Fri Oct 02 12:19:53 2020 +0200
+files:       widget/gtk/WindowSurfaceWayland.cpp
+description:
+Bug 1668771 [Wayland] Use timeout for frame callbacks for basic compositor, r?jhorak
+
+Differential Revision: https://phabricator.services.mozilla.com/D92200
+
+
+diff --git a/widget/gtk/WindowSurfaceWayland.cpp b/widget/gtk/WindowSurfaceWayland.cpp
+--- a/widget/gtk/WindowSurfaceWayland.cpp
++++ b/widget/gtk/WindowSurfaceWayland.cpp
+@@ -37,6 +37,9 @@ extern mozilla::LazyLogModule gWidgetWay
+ // Maximal compositing timeout it miliseconds
+ #define COMPOSITING_TIMEOUT 200
+ 
++// Maximal timeout between frame callbacks
++#define FRAME_CALLBACK_TIMEOUT 20
++
+ namespace mozilla {
+ namespace widget {
+ 
+@@ -941,8 +944,12 @@ void WindowSurfaceWayland::CommitWayland
+     if (waylandSurface == mLastCommittedSurface) {
+       LOGWAYLAND(("    [%p] wait for frame callback.\n", (void*)this));
+       // We have an active frame callback pending from our recent surface.
+-      // It means we should defer the commit to FrameCallbackHandler().
+-      return;
++      // It means we should defer the commit to FrameCallbackHandler(),
++      // but only if we're under frame callback timeout range.
++      if (mLastCommitTime && (g_get_monotonic_time() / 1000) - mLastCommitTime <
++                                 FRAME_CALLBACK_TIMEOUT) {
++        return;
++      }
+     }
+     // If our stored wl_surface does not match the actual one it means the frame
+     // callback is no longer active and we should release it.
+