From 0fbda366e838dd675022deb383cef9ed5222ce00 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
Date: Fri, 24 Apr 2020 15:15:53 +0200
Subject: [PATCH] native: Return an error if no drm devices are found

Without this, we'll end up segfaulting when trying to log the
non-existing error.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1217
---
 src/backends/native/meta-udev.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/backends/native/meta-udev.c b/src/backends/native/meta-udev.c
index 2f19c8c9c..4cf9e379f 100644
--- a/src/backends/native/meta-udev.c
+++ b/src/backends/native/meta-udev.c
@@ -148,6 +148,13 @@ meta_udev_list_drm_devices (MetaUdev  *udev,
       l = l_next;
     }
 
+  if (!devices)
+    {
+      g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                   "No DRM devices found");
+      return NULL;
+    }
+
   return devices;
 }