Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755177AbYHGM2G (ORCPT ); Thu, 7 Aug 2008 08:28:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753702AbYHGM0D (ORCPT ); Thu, 7 Aug 2008 08:26:03 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:53405 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755039AbYHGMYm (ORCPT ); Thu, 7 Aug 2008 08:24:42 -0400 Date: Thu, 7 Aug 2008 10:14:48 +0100 From: Alan Cox To: Laurent Pinchart Cc: Aristeu Rozanski , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1] 8250: add support for DTR/DSR hardware flow control Message-ID: <20080807101448.239fadc6@lxorguk.ukuu.org.uk> In-Reply-To: <200808071032.16709.laurentp@cse-semaphore.com> References: <20080806211438.GB20355@redhat.com> <200808071032.16709.laurentp@cse-semaphore.com> X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.11; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 611 Lines: 10 > Please read the '[PATCH/RFC] 8250: Auto RS485 direction control' thread for background information. In a nutshell we need more than just CTS/RTS and DTR/DSR, and we don't have enough c_cflags bits. We will probably have to create a new ioctl. Maybe - fortunately the kernel and user termios structure are now independent so we can extend ktermios easily enough. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/