On Sun, Sep 19, 2010 at 02:21:39PM +0000, Ed Schouten wrote: > Author: ed > Date: Sun Sep 19 14:21:39 2010 > New Revision: 212860 > URL: http://svn.freebsd.org/changeset/base/212860 > > Log: > Ignore DCD handling on /dev/console entirely. > > This makes /dev/console more fail-safe and prevents a potential console > lock-up during boot. > > Discussed on: stable@ > Tested by: koitsu@ > MFC after: 1 week > > Modified: > head/sys/kern/tty.c > > Modified: head/sys/kern/tty.c > ============================================================================== > --- head/sys/kern/tty.c Sun Sep 19 13:49:02 2010 (r212859) > +++ head/sys/kern/tty.c Sun Sep 19 14:21:39 2010 (r212860) > @@ -282,7 +282,8 @@ ttydev_open(struct cdev *dev, int oflags > > /* Wait for Carrier Detect. */ > if (!TTY_CALLOUT(tp, dev) && (oflags & O_NONBLOCK) == 0 && > - (tp->t_termios.c_cflag & CLOCAL) == 0) { > + (tp->t_termios.c_cflag & CLOCAL) == 0 && > + dev != dev_console) { > while ((ttydevsw_modem(tp, 0, 0) & SER_DCD) == 0) { > error = tty_wait(tp, &tp->t_dcdwait); > if (error != 0) Shouldn't you always report CLOCAL for console then ?
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