113   int rv = read(m_ttyFd, buffer, len);  in readData()  local
115   if (rv < 0)  in readData()
120       return rv;  in readData()
123   return rv;  in readData()
131   int rv = write(m_ttyFd, buffer, len);  in writeData()  local
133   if (rv < 0)  in writeData()
138       return rv;  in writeData()
143   return rv;  in writeData()
180   int rv = readData(buf, 4, defaultDelay);  in checkOK()  local
182   if (rv != 4)  in checkOK()
185            << rv << ", expected 4" << endl;  in checkOK()
224   int rv = readData(buf, 16, defaultDelay);  in getConfig()  local
226   if (rv != 16)  in getConfig()
229            << rv << ", expected 16" << endl;  in getConfig()
440   int rv = readData(&buf, 1, defaultDelay);  in getRFSignalStrength()  local
442   if (rv != 1)  in getRFSignalStrength()
445            << rv << ", expected 1" << endl;  in getRFSignalStrength()
472   int rv = readData(&buf, 1, defaultDelay);  in getModSignalStrength()  local
474   if (rv != 1)  in getModSignalStrength()
477            << rv << ", expected 1" << endl;  in getModSignalStrength()