1 files changed, 7 insertions, 5 deletions
diff --git a/src/serialport/qserialport_unix.cpp b/src/serialport/qserialport_unix.cpp
index 4df1fcb..4941a86 100644
--- a/src/serialport/qserialport_unix.cpp
+++ b/src/serialport/qserialport_unix.cpp
@@ -763,13 +763,19 @@ bool QSerialPortPrivate::setFlowControl(QSerialPort::FlowControl flowControl)
     return setTermios(&tio);
 }
 
+bool QSerialPortPrivate::startAsyncRead()
+{
+    setReadNotificationEnabled(true);
+    return true;
+}
+
 bool QSerialPortPrivate::readNotification()
 {
     Q_Q(QSerialPort);
 
     // Always buffered, read data from the port into the read buffer
     qint64 newBytes = buffer.size();
-    qint64 bytesToRead = ReadChunkSize;
+    qint64 bytesToRead = QSERIALPORT_BUFFERSIZE;
 
     if (readBufferMaxSize && bytesToRead > (readBufferMaxSize - buffer.size())) {
         bytesToRead = readBufferMaxSize - buffer.size();
@@ -798,10 +804,6 @@ bool QSerialPortPrivate::readNotification()
 
     newBytes = buffer.size() - newBytes;
 
-    // If read buffer is full, disable the read port notifier.
-    if (readBufferMaxSize && buffer.size() == readBufferMaxSize)
-        setReadNotificationEnabled(false);
-
     // only emit readyRead() when not recursing, and only if there is data available
     const bool hasData = newBytes > 0;