From bef35e48fe8b38aa1cfb67bc25bf7ae42c2ffd4b Mon Sep 17 00:00:00 2001
From: Aaron Andersen <aaron@fosslib.net>
Date: Thu, 9 Oct 2025 20:52:51 -0400
Subject: [PATCH] backlight: gracefully handle a null epoll device

---
 src/util/backlight_backend.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/util/backlight_backend.cpp b/src/util/backlight_backend.cpp
index 863896d5..cc513cce 100644
--- a/src/util/backlight_backend.cpp
+++ b/src/util/backlight_backend.cpp
@@ -201,7 +201,9 @@ BacklightBackend::BacklightBackend(std::chrono::milliseconds interval,
         const auto &event = events[i];
         check_eq(event.data.fd, udev_fd, "unexpected udev fd");
         std::unique_ptr<udev_device, UdevDeviceDeleter> dev{udev_monitor_receive_device(mon.get())};
-        check_nn(dev.get(), "epoll dev was null");
+        if (!dev) {
+          continue;
+        }
         upsert_device(devices, dev.get());
       }