svn commit: r212860 - head/sys/kern

[Kostik Belousov]

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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