From d4a3d6689ea2cd75427b3c3efedd654c6e38d30d Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Fri, 12 Jan 2024 17:00:41 +0100
Subject: [PATCH] backends/drm: wait for the pageflip to be done with the
 condition variable

...instead of busy looping, which is causing several percent CPU usage in some cases

BUG: 479126
---
 src/backends/drm/drm_commit_thread.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backends/drm/drm_commit_thread.cpp b/src/backends/drm/drm_commit_thread.cpp
index b70a0874e6..6062f98b75 100644
--- a/src/backends/drm/drm_commit_thread.cpp
+++ b/src/backends/drm/drm_commit_thread.cpp
@@ -31,7 +31,7 @@ DrmCommitThread::DrmCommitThread(const QString &name)
                 return;
             }
             std::unique_lock lock(m_mutex);
-            if (m_commits.empty()) {
+            if (m_commits.empty() || m_committed) {
                 m_commitPending.wait(lock);
             }
             if (m_committed) {