neophyte: tcsetattr() gives 22 error in i386, not in amd64?

[Steve Franks]

Hi,

I'm getting a 22 errno from tcsetattr() on 7-STABLE i386 in code which
was working under 7-STABLE amd64.  Serial device is a ucom (silabs
cp2103).  Permissions on /dev/cuaU0 look fine.  Cutecom/Minicom
appears to open the port without error...

Ideas?

Thanks,
Steve

    if(cfsetspeed(&IspEnvironment->newtio,(speed_t)
strtol(IspEnvironment->baud_rate,NULL,10))) {

                  DebugPrintf(1, "baudrate %s not supported\n",
IspEnvironment->baud_rate);

                  exit(3);

              };


    switch (atol(IspEnvironment->baud_rate))

    {

          case 1152000: NEWTERMIOS_SETBAUDARTE(B1152000); break;


          default:

              {

                  DebugPrintf(1, "unknown baudrate %s\n",
IspEnvironment->baud_rate);

                  exit(3);

              }

    }



    IspEnvironment->newtio.c_iflag = IGNPAR | IGNBRK | IXON | IXOFF;

    IspEnvironment->newtio.c_oflag = 0;



    /* set input mode (non-canonical, no echo,...) */

    IspEnvironment->newtio.c_lflag = 0;



    cfmakeraw(&IspEnvironment->newtio);

    IspEnvironment->newtio.c_cc[VTIME]    = 1;   /* inter-character
timer used */

    IspEnvironment->newtio.c_cc[VMIN]     = 0;   /* blocking read
until 0 chars received */



    tcflush(IspEnvironment->fdCom, TCIFLUSH);

	int err = tcsetattr(IspEnvironment->fdCom, TCSANOW, &IspEnvironment->newtio);