> 8250 driver has device nodes like /dev/ttySxxx. Just to be sure are you really > using kernel's native driver? Yes, I just have a udev rule to make it easier for my testing. KERNEL=="ttyS6", SYMLINK+="exar_serial" > > > At this point, this leads me to believe that there is actually a more > > fundamental problem with the 8250 driver and flushing data. I was > > focusing more on the exar, since that is the only hardware that I have > > available that uses the 8250 driver. > > Hmm... It's weird that no-one else had noticed so far an issue. That was my thought as well. My thought is that *normally* this isn't an issue, since whatever program is writing to the serial port will keep it open long enough for the data to be transmitted before exiting, at which point the shutdown gets triggered. I'll try to keep an eye on this issue at least, and test any patches as they come. -Robert Middleton -Robert Middleton
