From 7582d72eac8d3bb47309d3333650a226a5b2d547 Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Mon, 21 Aug 2023 13:41:57 +0200
Subject: [PATCH] backends/drm: cache the canonical file path of the device

---
 src/backends/drm/drm_backend.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/backends/drm/drm_backend.cpp b/src/backends/drm/drm_backend.cpp
index 476d10b91f..bfd3521eb2 100644
--- a/src/backends/drm/drm_backend.cpp
+++ b/src/backends/drm/drm_backend.cpp
@@ -175,8 +175,9 @@ void DrmBackend::handleUdevEvent()
     while (auto device = m_udevMonitor->getDevice()) {
         // Ignore the device seat if the KWIN_DRM_DEVICES envvar is set.
         if (!m_explicitGpus.isEmpty()) {
-            const bool foundMatch = std::any_of(m_explicitGpus.begin(), m_explicitGpus.end(), [&device](const QString &explicitPath) {
-                return QFileInfo(explicitPath).canonicalPath() == QFileInfo(device->devNode()).canonicalPath();
+            const auto canonicalPath = QFileInfo(device->devNode()).canonicalPath();
+            const bool foundMatch = std::any_of(m_explicitGpus.begin(), m_explicitGpus.end(), [&canonicalPath](const QString &explicitPath) {
+                return QFileInfo(explicitPath).canonicalPath() == canonicalPath;
             });
             if (!foundMatch) {
                 continue;