On Fri, 02 Oct 2009 16:00:41 -0700 ebiederm@xxxxxxxxxxxx (Eric W. Biederman) wrote: > > > I have seen a hang in: > /bin/stty (changing the baud rate) > set_termios > tty_wait_until_sent > tty_chars_in_buffer > ftdi_chars_in_buffer > > Where the driver wedged for a serial port and no progress > was made. > > This happened to me several times with 2.6.31. My initial > hypothesis was this was a hardware error (as it only happened > on single piece of hardware). With all of the driver problems > I suspect it could be a driver bug. Driver bug I would think - or setup. If you've genuinely got the port flow controlled then a request to set the termios after the I/O will wait until a signal or carrier change (or indeed forever) quite correctly. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
