From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Oleksiy Kebkal" Subject: Re: should RTS init in serial core be tied to CRTSCTS Date: Wed, 7 Mar 2007 14:38:25 +0100 Message-ID: <57354eff0703070538l1a4ed170q6eb8dd8bbf7aadf0@mail.gmail.com> References: <8bd0f97a0703011603m794e00f5x875eb68ad0db05de@mail.gmail.com> <200703061824.08834.rgetz@blackfin.uclinux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from nf-out-0910.google.com ([64.233.182.186]:13121 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965360AbXCGNi1 (ORCPT ); Wed, 7 Mar 2007 08:38:27 -0500 Received: by nf-out-0910.google.com with SMTP id o25so196582nfa for ; Wed, 07 Mar 2007 05:38:26 -0800 (PST) In-Reply-To: Content-Disposition: inline Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Krzysztof Halasa Cc: Robin Getz , Mike Frysinger , rmk@arm.linux.org.uk, Linux Kernel Mailing List , linux-serial@vger.kernel.org 2007/3/7, Krzysztof Halasa : > Robin Getz 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? No. It is possible to use TIOCMSET only after open syscall. Between open and ioctl syscals RTS will be asserted. Sometimes it is not acceptable behaviour. -Oleksiy