From e569340c6b27e0912ad7548277609923b3349f5f Mon Sep 17 00:00:00 2001
From: Khiet Tam Nguyen <86177399+nktnet1@users.noreply.github.com>
Date: Thu, 25 Jul 2024 04:14:29 +1000
Subject: [PATCH] drm: ignore primary argument when using evdi drivers (#25)

* fix: ignore primary if using evdi drivers for displaylink

* style: removed curly braces from evdi if-check
---
 src/backend/drm/DRM.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/backend/drm/DRM.cpp b/src/backend/drm/DRM.cpp
index d0588a8..1c21c56 100644
--- a/src/backend/drm/DRM.cpp
+++ b/src/backend/drm/DRM.cpp
@@ -622,8 +622,12 @@ bool Aquamarine::CDRMBackend::registerGPU(SP<CSessionDevice> gpu_, SP<CDRMBacken
 
     gpuName = drmName;
 
+    auto drmVerName = drmVer->name ? drmVer->name : "unknown";
+    if (std::string_view(drmVerName) == "evdi")
+        primary = {};
+
     backend->log(AQ_LOG_DEBUG,
-                 std::format("drm: Starting backend for {}, with driver {}{}", drmName ? drmName : "unknown", drmVer->name ? drmVer->name : "unknown",
+                 std::format("drm: Starting backend for {}, with driver {}{}", drmName ? drmName : "unknown", drmVerName,
                              (primary ? std::format(" with primary {}", primary->gpu->path) : "")));
 
     drmFreeVersion(drmVer);