backends/libinput: Destroy Connection in correct thread

src/backends/libinput/connection.cpp

@@ -80,7 +80,7 @@ Q_SIGNALS:
     void deviceRemoved(QString sysName);
 };
 
-std::unique_ptr<Connection> Connection::create(Session *session)
+Connection *Connection::create(Session *session)
 {
     std::unique_ptr<Udev> udev = std::make_unique<Udev>();
     if (!udev->isValid()) {
@@ -96,7 +96,7 @@ std::unique_ptr<Connection> Connection::create(Session *session)
         qCWarning(KWIN_LIBINPUT) << "Failed to initialize context";
         return nullptr;
     }
-    return std::unique_ptr<Connection>(new Connection(std::move(context)));
+    return new Connection(std::move(context));
 }
 
 Connection::Connection(std::unique_ptr<Context> &&input)

src/backends/libinput/connection.h

@@ -56,7 +56,7 @@ public:
 
     QStringList devicesSysNames() const;
 
-    static std::unique_ptr<Connection> create(Session *session);
+    static Connection *create(Session *session);
 
 Q_SIGNALS:
     void deviceAdded(KWin::LibInput::Device *);

src/backends/libinput/libinputbackend.cpp

@@ -21,21 +21,23 @@ LibinputBackend::LibinputBackend(Session *session, QObject *parent)
     m_connection->moveToThread(&m_thread);
 
     connect(
-        m_connection.get(), &LibInput::Connection::eventsRead, this, [this]() {
-            m_connection->processEvents();
-        },
+        m_connection, &LibInput::Connection::eventsRead, this, [this]() {
+        m_connection->processEvents();
+    },
         Qt::QueuedConnection);
 
     // Direct connection because the deviceAdded() and the deviceRemoved() signals are emitted
     // from the main thread.
-    connect(m_connection.get(), &LibInput::Connection::deviceAdded,
+    connect(m_connection, &LibInput::Connection::deviceAdded,
             this, &InputBackend::deviceAdded, Qt::DirectConnection);
-    connect(m_connection.get(), &LibInput::Connection::deviceRemoved,
+    connect(m_connection, &LibInput::Connection::deviceRemoved,
             this, &InputBackend::deviceRemoved, Qt::DirectConnection);
 }
 
 LibinputBackend::~LibinputBackend()
 {
+    m_connection->deleteLater();
+
     m_thread.quit();
     m_thread.wait();
 }

src/backends/libinput/libinputbackend.h

@@ -33,7 +33,7 @@ public:
 
 private:
     QThread m_thread;
-    std::unique_ptr<LibInput::Connection> m_connection;
+    LibInput::Connection *m_connection = nullptr;
 };
 
 } // namespace KWin