From a23d23593ba28152a4484e1341b469d2f7f231b8 Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Sat, 2 Apr 2022 02:45:01 +0200
Subject: [PATCH] backends/drm: check egl config before creating gbm surface

---
 src/backends/drm/egl_gbm_backend.cpp | 2 +-
 src/backends/drm/egl_gbm_layer.cpp   | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/backends/drm/egl_gbm_backend.cpp b/src/backends/drm/egl_gbm_backend.cpp
index a4b40f748e..bdeaa60cc2 100644
--- a/src/backends/drm/egl_gbm_backend.cpp
+++ b/src/backends/drm/egl_gbm_backend.cpp
@@ -291,7 +291,7 @@ bool EglGbmBackend::prefer10bpc() const
 
 EGLConfig EglGbmBackend::config(uint32_t format) const
 {
-    return m_configs[format];
+    return m_configs.value(format, EGL_NO_CONFIG_KHR);
 }
 
 QSharedPointer<DrmPipelineLayer> EglGbmBackend::createDrmPipelineLayer(DrmPipeline *pipeline)
diff --git a/src/backends/drm/egl_gbm_layer.cpp b/src/backends/drm/egl_gbm_layer.cpp
index 38f86e3578..37ddeb435c 100644
--- a/src/backends/drm/egl_gbm_layer.cpp
+++ b/src/backends/drm/egl_gbm_layer.cpp
@@ -200,6 +200,9 @@ bool EglGbmLayer::createGbmSurface(uint32_t format, const QVector<uint64_t> &mod
 
     const auto size = m_pipeline->bufferSize();
     const auto config = m_eglBackend->config(format);
+    if (config == EGL_NO_CONFIG_KHR) {
+        return false;
+    }
 
     QSharedPointer<GbmSurface> gbmSurface;
 #if HAVE_GBM_BO_GET_FD_FOR_PLANE