linux-kernel - Re: should RTS init in serial core be tied to CRTSCTS

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Date:	Wed, 07 Mar 2007 13:46:51 +0100
From:	Krzysztof Halasa <khc@...waw.pl>
To:	Robin Getz <rgetz@...ckfin.uclinux.org>
Cc:	"Mike Frysinger" <vapier.adi@...il.com>, rmk@....linux.org.uk,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	linux-serial@...r.kernel.org
Subject: Re: should RTS init in serial core be tied to CRTSCTS

Robin Getz <rgetz@...ckfin.uclinux.org> writes:

> It is useful on (broken) legacy serial equipment, where RTS should be 
> completely under the applications control.
>
> Glitches on RTS aren't acceptable, and confuse some devices.

Does that mean you can't use TIOCMSET, TIOCM_RTS etc?

> I understand - the request wasn't to change the default operation - just
> add a 
> method of controlling things, so those minority of people who want the 
> control can have it.

No problem as long as open without CRTSCTS raises RTS by default.
-- 
Krzysztof Halasa
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