Messages in this thread | | | From | (Eric W. Biederman) | Date | Fri, 02 Oct 2009 16:00:41 -0700 | Subject | Re: [PATCH] USB: ftdi_sio: Remove tty->low_latency. |
| |
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.
Any ideas from the people who understand this code?
Eric
| |