Minimize number of system calls at opening

Currently, the method QSP::open() several times calls the system
functions to get/set of DCB/termios structures for each parameter.
It is not rational and should be minimized as possible, in ideally
to once executed.

Change-Id: If1f308176a82f3c8896fc648bf656f089e099f3f
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>

1 files changed, 0 insertions, 9 deletions

diff --git a/src/serialport/qserialport.cpp b/src/serialport/qserialport.cpp
index 45f56c8..d4e9a4f 100644
--- a/src/serialport/qserialport.cpp
+++ b/src/serialport/qserialport.cpp
@@ -568,15 +568,6 @@ bool QSerialPort::open(OpenMode mode)
     if (!d->open(mode))
         return false;
 
-    if (!d->setBaudRate()
-        || !d->setDataBits(d->dataBits)
-        || !d->setParity(d->parity)
-        || !d->setStopBits(d->stopBits)
-        || !d->setFlowControl(d->flowControl)) {
-        d->close();
-        return false;
-    }
-
     QIODevice::open(mode);
     return true;
 }