QEvdev: use printf-style qCDebug()/qWarning()

Also use qUtf16Printable() and qErrnoWarning (removing explicit errno, where
present).

Saves 6.6KiB in text size on optimized Linux AMD64 GCC 9.1 build across
all .so's that link to QtInputSupport.a.

Change-Id: I1def2cfabd2eed65390099cd1d06f8061a9355be
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
 
 

7 files changed, 52 insertions, 51 deletions

diff --git a/src/platformsupport/input/evdevkeyboard/qevdevkeyboardhandler.cpp b/src/platformsupport/input/evdevkeyboard/qevdevkeyboardhandler.cpp
index 02d6586fe8..35ee23311d 100644
--- a/src/platformsupport/input/evdevkeyboard/qevdevkeyboardhandler.cpp
+++ b/src/platformsupport/input/evdevkeyboard/qevdevkeyboardhandler.cpp
@@ -102,7 +102,8 @@ QEvdevKeyboardHandler *QEvdevKeyboardHandler::create(const QString &device,
                                                      const QString &specification,
                                                      const QString &defaultKeymapFile)
 {
-    qCDebug(qLcEvdevKey) << "Try to create keyboard handler for" << device << specification;
+    qCDebug(qLcEvdevKey, "Try to create keyboard handler for \"%ls\" \"%ls\"",
+            qUtf16Printable(device), qUtf16Printable(specification));
 
     QString keymapFile = defaultKeymapFile;
     int repeatDelay = 400;
@@ -127,7 +128,7 @@ QEvdevKeyboardHandler *QEvdevKeyboardHandler::create(const QString &device,
             grab = arg.mid(5).toInt();
     }
 
-    qCDebug(qLcEvdevKey) << "Opening keyboard at" << device;
+    qCDebug(qLcEvdevKey, "Opening keyboard at %ls", qUtf16Printable(device));
 
     QFdContainer fd(qt_safe_open(device.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0));
     if (fd.get() >= 0) {
@@ -139,14 +140,14 @@ QEvdevKeyboardHandler *QEvdevKeyboardHandler::create(const QString &device,
 
         return new QEvdevKeyboardHandler(device, fd, disableZap, enableCompose, keymapFile);
     } else {
-        qWarning("Cannot open keyboard input device '%s': %s", qPrintable(device), strerror(errno));
+        qErrnoWarning("Cannot open keyboard input device '%ls'", qUtf16Printable(device));
         return 0;
     }
 }
 
 void QEvdevKeyboardHandler::switchLed(int led, bool state)
 {
-    qCDebug(qLcEvdevKey) << "switchLed" << led << state;
+    qCDebug(qLcEvdevKey, "switchLed %d %d", led, int(state));
 
     struct ::input_event led_ie;
     ::gettimeofday(&led_ie.time, 0);
@@ -170,7 +171,7 @@ void QEvdevKeyboardHandler::readKeycode()
             return;
         } else if (result < 0) {
             if (errno != EINTR && errno != EAGAIN) {
-                qErrnoWarning(errno, "evdevkeyboard: Could not read from input device");
+                qErrnoWarning("evdevkeyboard: Could not read from input device");
                 // If the device got disconnected, stop reading, otherwise we get flooded
                 // by the above error over and over again.
                 if (errno == ENODEV) {
@@ -473,7 +474,7 @@ QEvdevKeyboardHandler::KeycodeAction QEvdevKeyboardHandler::processKeycode(quint
 
 void QEvdevKeyboardHandler::unloadKeymap()
 {
-    qCDebug(qLcEvdevKey) << "Unload current keymap and restore built-in";
+    qCDebug(qLcEvdevKey, "Unload current keymap and restore built-in");
 
     if (m_keymap && m_keymap != s_keymap_default)
         delete [] m_keymap;
@@ -517,12 +518,12 @@ void QEvdevKeyboardHandler::unloadKeymap()
 
 bool QEvdevKeyboardHandler::loadKeymap(const QString &file)
 {
-    qCDebug(qLcEvdevKey) << "Loading keymap" << file;
+    qCDebug(qLcEvdevKey, "Loading keymap %ls", qUtf16Printable(file));
 
     QFile f(file);
 
     if (!f.open(QIODevice::ReadOnly)) {
-        qWarning("Could not open keymap file '%s'", qPrintable(file));
+        qWarning("Could not open keymap file '%ls'", qUtf16Printable(file));
         return false;
     }
 
@@ -541,7 +542,7 @@ bool QEvdevKeyboardHandler::loadKeymap(const QString &file)
     ds >> qmap_magic >> qmap_version >> qmap_keymap_size >> qmap_keycompose_size;
 
     if (ds.status() != QDataStream::Ok || qmap_magic != QEvdevKeyboardMap::FileMagic || qmap_version != 1 || qmap_keymap_size == 0) {
-        qWarning("'%s' is not a valid .qmap keymap file", qPrintable(file));
+        qWarning("'%ls' is not a valid .qmap keymap file", qUtf16Printable(file));
         return false;
     }
 
@@ -557,7 +558,7 @@ bool QEvdevKeyboardHandler::loadKeymap(const QString &file)
         delete [] qmap_keymap;
         delete [] qmap_keycompose;
 
-        qWarning("Keymap file '%s' cannot be loaded.", qPrintable(file));
+        qWarning("Keymap file '%ls' cannot be loaded.", qUtf16Printable(file));
         return false;
     }
 
diff --git a/src/platformsupport/input/evdevkeyboard/qevdevkeyboardmanager.cpp b/src/platformsupport/input/evdevkeyboard/qevdevkeyboardmanager.cpp
index e1659bc0d9..a73d4728a5 100644
--- a/src/platformsupport/input/evdevkeyboard/qevdevkeyboardmanager.cpp
+++ b/src/platformsupport/input/evdevkeyboard/qevdevkeyboardmanager.cpp
@@ -80,7 +80,7 @@ QEvdevKeyboardManager::QEvdevKeyboardManager(const QString &key, const QString &
         addKeyboard(device);
 
     if (devices.isEmpty()) {
-        qCDebug(qLcEvdevKey) << "evdevkeyboard: Using device discovery";
+        qCDebug(qLcEvdevKey, "evdevkeyboard: Using device discovery");
         m_deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Keyboard, this);
         if (m_deviceDiscovery) {
             // scan and add already connected keyboards
@@ -104,7 +104,7 @@ QEvdevKeyboardManager::~QEvdevKeyboardManager()
 
 void QEvdevKeyboardManager::addKeyboard(const QString &deviceNode)
 {
-    qCDebug(qLcEvdevKey) << "Adding keyboard at" << deviceNode;
+    qCDebug(qLcEvdevKey, "Adding keyboard at %ls", qUtf16Printable(deviceNode));
     QEvdevKeyboardHandler *keyboard;
     keyboard = QEvdevKeyboardHandler::create(deviceNode, m_spec, m_defaultKeymapFile);
     if (keyboard) {
@@ -112,14 +112,14 @@ void QEvdevKeyboardManager::addKeyboard(const QString &deviceNode)
         QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
             QInputDeviceManager::DeviceTypeKeyboard, m_keyboards.count());
     } else {
-        qWarning("Failed to open keyboard device %s", qPrintable(deviceNode));
+        qWarning("Failed to open keyboard device %ls", qUtf16Printable(deviceNode));
     }
 }
 
 void QEvdevKeyboardManager::removeKeyboard(const QString &deviceNode)
 {
     if (m_keyboards.contains(deviceNode)) {
-        qCDebug(qLcEvdevKey) << "Removing keyboard at" << deviceNode;
+        qCDebug(qLcEvdevKey, "Removing keyboard at %ls", qUtf16Printable(deviceNode));
         QEvdevKeyboardHandler *keyboard = m_keyboards.value(deviceNode);
         m_keyboards.remove(deviceNode);
         QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
diff --git a/src/platformsupport/input/evdevmouse/qevdevmousemanager.cpp b/src/platformsupport/input/evdevmouse/qevdevmousemanager.cpp
index ae81bca00f..038ff7db43 100644
--- a/src/platformsupport/input/evdevmouse/qevdevmousemanager.cpp
+++ b/src/platformsupport/input/evdevmouse/qevdevmousemanager.cpp
@@ -86,7 +86,7 @@ QEvdevMouseManager::QEvdevMouseManager(const QString &key, const QString &specif
         addMouse(device);
 
     if (devices.isEmpty()) {
-        qCDebug(qLcEvdevMouse) << "evdevmouse: Using device discovery";
+        qCDebug(qLcEvdevMouse, "evdevmouse: Using device discovery");
         m_deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Mouse | QDeviceDiscovery::Device_Touchpad, this);
         if (m_deviceDiscovery) {
             // scan and add already connected keyboards
@@ -159,7 +159,7 @@ void QEvdevMouseManager::handleWheelEvent(QPoint delta)
 
 void QEvdevMouseManager::addMouse(const QString &deviceNode)
 {
-    qCDebug(qLcEvdevMouse) << "Adding mouse at" << deviceNode;
+    qCDebug(qLcEvdevMouse, "Adding mouse at %ls", qUtf16Printable(deviceNode));
     QEvdevMouseHandler *handler = QEvdevMouseHandler::create(deviceNode, m_spec);
     if (handler) {
         connect(handler, &QEvdevMouseHandler::handleMouseEvent,
@@ -170,14 +170,14 @@ void QEvdevMouseManager::addMouse(const QString &deviceNode)
         QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
             QInputDeviceManager::DeviceTypePointer, m_mice.count());
     } else {
-        qWarning("evdevmouse: Failed to open mouse device %s", qPrintable(deviceNode));
+        qWarning("evdevmouse: Failed to open mouse device %ls", qUtf16Printable(deviceNode));
     }
 }
 
 void QEvdevMouseManager::removeMouse(const QString &deviceNode)
 {
     if (m_mice.contains(deviceNode)) {
-        qCDebug(qLcEvdevMouse) << "Removing mouse at" << deviceNode;
+        qCDebug(qLcEvdevMouse, "Removing mouse at %ls", qUtf16Printable(deviceNode));
         QEvdevMouseHandler *handler = m_mice.value(deviceNode);
         m_mice.remove(deviceNode);
         QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
diff --git a/src/platformsupport/input/evdevtablet/qevdevtablethandler.cpp b/src/platformsupport/input/evdevtablet/qevdevtablethandler.cpp
index b6051aaf3c..c86840b76c 100644
--- a/src/platformsupport/input/evdevtablet/qevdevtablethandler.cpp
+++ b/src/platformsupport/input/evdevtablet/qevdevtablethandler.cpp
@@ -172,11 +172,11 @@ QEvdevTabletHandler::QEvdevTabletHandler(const QString &device, const QString &s
 
     setObjectName(QLatin1String("Evdev Tablet Handler"));
 
-    qCDebug(qLcEvdevTablet, "evdevtablet: using %s", qPrintable(device));
+    qCDebug(qLcEvdevTablet, "evdevtablet: using %ls", qUtf16Printable(device));
 
     m_fd = QT_OPEN(device.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0);
     if (m_fd < 0) {
-        qErrnoWarning(errno, "evdevtablet: Cannot open input device %s", qPrintable(device));
+        qErrnoWarning("evdevtablet: Cannot open input device %ls", qUtf16Printable(device));
         return;
     }
 
@@ -184,11 +184,11 @@ QEvdevTabletHandler::QEvdevTabletHandler(const QString &device, const QString &s
     if (grabSuccess)
         ioctl(m_fd, EVIOCGRAB, (void *) 0);
     else
-        qWarning("evdevtablet: %s: The device is grabbed by another process. No events will be read.", qPrintable(device));
+        qWarning("evdevtablet: %ls: The device is grabbed by another process. No events will be read.", qUtf16Printable(device));
 
     d = new QEvdevTabletData(this);
     if (!queryLimits())
-        qWarning("evdevtablet: %s: Unset or invalid ABS limits. Behavior will be unspecified.", qPrintable(device));
+        qWarning("evdevtablet: %ls: Unset or invalid ABS limits. Behavior will be unspecified.", qUtf16Printable(device));
 
     m_notifier = new QSocketNotifier(m_fd, QSocketNotifier::Read, this);
     connect(m_notifier, &QSocketNotifier::activated, this, &QEvdevTabletHandler::readData);
@@ -216,32 +216,32 @@ bool QEvdevTabletHandler::queryLimits()
     if (ok) {
         d->minValues.x = absInfo.minimum;
         d->maxValues.x = absInfo.maximum;
-        qCDebug(qLcEvdevTablet, "evdevtablet: %s: min X: %d max X: %d", qPrintable(m_device),
+        qCDebug(qLcEvdevTablet, "evdevtablet: %ls: min X: %d max X: %d", qUtf16Printable(m_device),
                 d->minValues.x, d->maxValues.x);
     }
     ok &= ioctl(m_fd, EVIOCGABS(ABS_Y), &absInfo) >= 0;
     if (ok) {
         d->minValues.y = absInfo.minimum;
         d->maxValues.y = absInfo.maximum;
-        qCDebug(qLcEvdevTablet, "evdevtablet: %s: min Y: %d max Y: %d", qPrintable(m_device),
+        qCDebug(qLcEvdevTablet, "evdevtablet: %ls: min Y: %d max Y: %d", qUtf16Printable(m_device),
                 d->minValues.y, d->maxValues.y);
     }
     if (ioctl(m_fd, EVIOCGABS(ABS_PRESSURE), &absInfo) >= 0) {
         d->minValues.p = absInfo.minimum;
         d->maxValues.p = absInfo.maximum;
-        qCDebug(qLcEvdevTablet, "evdevtablet: %s: min pressure: %d max pressure: %d", qPrintable(m_device),
+        qCDebug(qLcEvdevTablet, "evdevtablet: %ls: min pressure: %d max pressure: %d", qUtf16Printable(m_device),
                 d->minValues.p, d->maxValues.p);
     }
     if (ioctl(m_fd, EVIOCGABS(ABS_DISTANCE), &absInfo) >= 0) {
         d->minValues.d = absInfo.minimum;
         d->maxValues.d = absInfo.maximum;
-        qCDebug(qLcEvdevTablet, "evdevtablet: %s: min distance: %d max distance: %d", qPrintable(m_device),
+        qCDebug(qLcEvdevTablet, "evdevtablet: %ls: min distance: %d max distance: %d", qUtf16Printable(m_device),
                 d->minValues.d, d->maxValues.d);
     }
     char name[128];
     if (ioctl(m_fd, EVIOCGNAME(sizeof(name) - 1), name) >= 0) {
         d->devName = QString::fromLocal8Bit(name);
-        qCDebug(qLcEvdevTablet, "evdevtablet: %s: device name: %s", qPrintable(m_device), name);
+        qCDebug(qLcEvdevTablet, "evdevtablet: %ls: device name: %s", qUtf16Printable(m_device), name);
     }
     return ok;
 }
@@ -253,11 +253,11 @@ void QEvdevTabletHandler::readData()
     for (; ;) {
         int result = QT_READ(m_fd, reinterpret_cast<char*>(buffer) + n, sizeof(buffer) - n);
         if (!result) {
-            qWarning("evdevtablet: %s: Got EOF from input device", qPrintable(m_device));
+            qWarning("evdevtablet: %ls: Got EOF from input device", qUtf16Printable(m_device));
             return;
         } else if (result < 0) {
             if (errno != EINTR && errno != EAGAIN) {
-                qErrnoWarning(errno, "evdevtablet: %s: Could not read from input device", qPrintable(m_device));
+                qErrnoWarning("evdevtablet: %ls: Could not read from input device", qUtf16Printable(m_device));
                 if (errno == ENODEV) { // device got disconnected -> stop reading
                     delete m_notifier;
                     m_notifier = 0;
diff --git a/src/platformsupport/input/evdevtablet/qevdevtabletmanager.cpp b/src/platformsupport/input/evdevtablet/qevdevtabletmanager.cpp
index 90949408ac..da4b6e5172 100644
--- a/src/platformsupport/input/evdevtablet/qevdevtabletmanager.cpp
+++ b/src/platformsupport/input/evdevtablet/qevdevtabletmanager.cpp
@@ -82,7 +82,7 @@ QEvdevTabletManager::QEvdevTabletManager(const QString &key, const QString &spec
 
     // when no devices specified, use device discovery to scan and monitor
     if (devices.isEmpty()) {
-        qCDebug(qLcEvdevTablet) << "evdevtablet: Using device discovery";
+        qCDebug(qLcEvdevTablet, "evdevtablet: Using device discovery");
         m_deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Tablet, this);
         if (m_deviceDiscovery) {
             const QStringList devices = m_deviceDiscovery->scanConnectedDevices();
@@ -104,7 +104,7 @@ QEvdevTabletManager::~QEvdevTabletManager()
 
 void QEvdevTabletManager::addDevice(const QString &deviceNode)
 {
-    qCDebug(qLcEvdevTablet) << "Adding device at" << deviceNode;
+    qCDebug(qLcEvdevTablet, "Adding device at %ls", qUtf16Printable(deviceNode));
     QEvdevTabletHandlerThread *handler;
     handler = new QEvdevTabletHandlerThread(deviceNode, m_spec);
     if (handler) {
@@ -112,14 +112,14 @@ void QEvdevTabletManager::addDevice(const QString &deviceNode)
         QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
             QInputDeviceManager::DeviceTypeTablet, m_activeDevices.count());
     } else {
-        qWarning("evdevtablet: Failed to open tablet device %s", qPrintable(deviceNode));
+        qWarning("evdevtablet: Failed to open tablet device %ls", qUtf16Printable(deviceNode));
     }
 }
 
 void QEvdevTabletManager::removeDevice(const QString &deviceNode)
 {
     if (m_activeDevices.contains(deviceNode)) {
-        qCDebug(qLcEvdevTablet) << "Removing device at" << deviceNode;
+        qCDebug(qLcEvdevTablet, "Removing device at %ls", qUtf16Printable(deviceNode));
         QEvdevTabletHandlerThread *handler = m_activeDevices.value(deviceNode);
         m_activeDevices.remove(deviceNode);
         QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
diff --git a/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp b/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp
index c3a5391255..737d85d5c3 100644
--- a/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp
+++ b/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp
@@ -228,7 +228,7 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
         }
     }
 
-    qCDebug(qLcEvdevTouch, "evdevtouch: Using device %s", qPrintable(device));
+    qCDebug(qLcEvdevTouch, "evdevtouch: Using device %ls", qUtf16Printable(device));
 
     m_fd = QT_OPEN(device.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0);
 
@@ -236,7 +236,7 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
         m_notify = new QSocketNotifier(m_fd, QSocketNotifier::Read, this);
         connect(m_notify, &QSocketNotifier::activated, this, &QEvdevTouchScreenHandler::readData);
     } else {
-        qErrnoWarning(errno, "evdevtouch: Cannot open input device %s", qPrintable(device));
+        qErrnoWarning("evdevtouch: Cannot open input device %ls", qUtf16Printable(device));
         return;
     }
 
@@ -266,8 +266,8 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
 
     d->deviceNode = device;
     qCDebug(qLcEvdevTouch,
-            "evdevtouch: %s: Protocol type %c %s (%s), filtered=%s",
-            qPrintable(d->deviceNode),
+            "evdevtouch: %ls: Protocol type %c %s (%s), filtered=%s",
+            qUtf16Printable(d->deviceNode),
             d->m_typeB ? 'B' : 'A', mtdevStr,
             d->m_singleTouch ? "single" : "multi",
             d->m_filtered ? "yes" : "no");
@@ -279,7 +279,7 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
     bool has_x_range = false, has_y_range = false;
 
     if (ioctl(m_fd, EVIOCGABS((d->m_singleTouch ? ABS_X : ABS_MT_POSITION_X)), &absInfo) >= 0) {
-        qCDebug(qLcEvdevTouch, "evdevtouch: %s: min X: %d max X: %d", qPrintable(device),
+        qCDebug(qLcEvdevTouch, "evdevtouch: %ls: min X: %d max X: %d", qUtf16Printable(device),
                 absInfo.minimum, absInfo.maximum);
         d->hw_range_x_min = absInfo.minimum;
         d->hw_range_x_max = absInfo.maximum;
@@ -287,7 +287,7 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
     }
 
     if (ioctl(m_fd, EVIOCGABS((d->m_singleTouch ? ABS_Y : ABS_MT_POSITION_Y)), &absInfo) >= 0) {
-        qCDebug(qLcEvdevTouch, "evdevtouch: %s: min Y: %d max Y: %d", qPrintable(device),
+        qCDebug(qLcEvdevTouch, "evdevtouch: %ls: min Y: %d max Y: %d", qUtf16Printable(device),
                 absInfo.minimum, absInfo.maximum);
         d->hw_range_y_min = absInfo.minimum;
         d->hw_range_y_max = absInfo.maximum;
@@ -295,10 +295,10 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
     }
 
     if (!has_x_range || !has_y_range)
-        qWarning("evdevtouch: %s: Invalid ABS limits, behavior unspecified", qPrintable(device));
+        qWarning("evdevtouch: %ls: Invalid ABS limits, behavior unspecified", qUtf16Printable(device));
 
     if (ioctl(m_fd, EVIOCGABS(ABS_PRESSURE), &absInfo) >= 0) {
-        qCDebug(qLcEvdevTouch, "evdevtouch: %s: min pressure: %d max pressure: %d", qPrintable(device),
+        qCDebug(qLcEvdevTouch, "evdevtouch: %ls: min pressure: %d max pressure: %d", qUtf16Printable(device),
                 absInfo.minimum, absInfo.maximum);
         if (absInfo.maximum > absInfo.minimum) {
             d->hw_pressure_min = absInfo.minimum;
@@ -309,7 +309,7 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
     char name[1024];
     if (ioctl(m_fd, EVIOCGNAME(sizeof(name) - 1), name) >= 0) {
         d->hw_name = QString::fromLocal8Bit(name);
-        qCDebug(qLcEvdevTouch, "evdevtouch: %s: device name: %s", qPrintable(device), name);
+        qCDebug(qLcEvdevTouch, "evdevtouch: %ls: device name: %s", qUtf16Printable(device), name);
     }
 
     // Fix up the coordinate ranges for am335x in case the kernel driver does not have them fixed.
@@ -345,8 +345,8 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const
     if (mapping.load()) {
         d->m_screenName = mapping.screenNameForDeviceNode(d->deviceNode);
         if (!d->m_screenName.isEmpty())
-            qCDebug(qLcEvdevTouch, "evdevtouch: Mapping device %s to screen %s",
-                    qPrintable(d->deviceNode), qPrintable(d->m_screenName));
+            qCDebug(qLcEvdevTouch, "evdevtouch: Mapping device %ls to screen %ls",
+                    qUtf16Printable(d->deviceNode), qUtf16Printable(d->m_screenName));
     }
 
     registerTouchDevice();
@@ -427,7 +427,7 @@ err:
         return;
     } else if (events < 0) {
         if (errno != EINTR && errno != EAGAIN) {
-            qErrnoWarning(errno, "evdevtouch: Could not read from input device");
+            qErrnoWarning("evdevtouch: Could not read from input device");
             if (errno == ENODEV) { // device got disconnected -> stop reading
                 delete m_notify;
                 m_notify = nullptr;
diff --git a/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp b/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp
index 4cacbf03e5..f59d8d5e99 100644
--- a/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp
+++ b/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp
@@ -82,7 +82,7 @@ QEvdevTouchManager::QEvdevTouchManager(const QString &key, const QString &specif
 
     // when no devices specified, use device discovery to scan and monitor
     if (devices.isEmpty()) {
-        qCDebug(qLcEvdevTouch) << "evdevtouch: Using device discovery";
+        qCDebug(qLcEvdevTouch, "evdevtouch: Using device discovery");
         m_deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Touchpad | QDeviceDiscovery::Device_Touchscreen, this);
         if (m_deviceDiscovery) {
             const QStringList devices = m_deviceDiscovery->scanConnectedDevices();
@@ -104,21 +104,21 @@ QEvdevTouchManager::~QEvdevTouchManager()
 
 void QEvdevTouchManager::addDevice(const QString &deviceNode)
 {
-    qCDebug(qLcEvdevTouch) << "evdevtouch: Adding device at" << deviceNode;
+    qCDebug(qLcEvdevTouch, "evdevtouch: Adding device at %ls", qUtf16Printable(deviceNode));
     QEvdevTouchScreenHandlerThread *handler;
     handler = new QEvdevTouchScreenHandlerThread(deviceNode, m_spec);
     if (handler) {
         m_activeDevices.insert(deviceNode, handler);
         connect(handler, &QEvdevTouchScreenHandlerThread::touchDeviceRegistered, this, &QEvdevTouchManager::updateInputDeviceCount);
     } else {
-        qWarning("evdevtouch: Failed to open touch device %s", qPrintable(deviceNode));
+        qWarning("evdevtouch: Failed to open touch device %ls", qUtf16Printable(deviceNode));
     }
 }
 
 void QEvdevTouchManager::removeDevice(const QString &deviceNode)
 {
     if (m_activeDevices.contains(deviceNode)) {
-        qCDebug(qLcEvdevTouch) << "evdevtouch: Removing device at" << deviceNode;
+        qCDebug(qLcEvdevTouch, "evdevtouch: Removing device at %ls", qUtf16Printable(deviceNode));
         QEvdevTouchScreenHandlerThread *handler = m_activeDevices.value(deviceNode);
         m_activeDevices.remove(deviceNode);
         delete handler;
@@ -135,8 +135,8 @@ void QEvdevTouchManager::updateInputDeviceCount()
             ++registeredTouchDevices;
     }
 
-    qCDebug(qLcEvdevTouch) << "evdevtouch: Updating QInputDeviceManager device count:" << registeredTouchDevices << " touch devices,"
-                           << m_activeDevices.count() - registeredTouchDevices << "pending handler(s)" ;
+    qCDebug(qLcEvdevTouch, "evdevtouch: Updating QInputDeviceManager device count: %d touch devices, %d pending handler(s)",
+            registeredTouchDevices, m_activeDevices.count() - registeredTouchDevices);
 
     QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
         QInputDeviceManager::DeviceTypeTouch, registeredTouchDevices);