From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFA8DC71155 for ; Mon, 30 Nov 2020 23:37:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7300620725 for ; Mon, 30 Nov 2020 23:37:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gyWeTNzl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388779AbgK3Xgv (ORCPT ); Mon, 30 Nov 2020 18:36:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388050AbgK3Xgv (ORCPT ); Mon, 30 Nov 2020 18:36:51 -0500 Received: from mail-vs1-xe41.google.com (mail-vs1-xe41.google.com [IPv6:2607:f8b0:4864:20::e41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDE2EC0613D2; Mon, 30 Nov 2020 15:36:10 -0800 (PST) Received: by mail-vs1-xe41.google.com with SMTP id u7so7291389vsq.11; Mon, 30 Nov 2020 15:36:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=mDHtJHxDKIp9CgY2O+nZjtN8N0N6lB3CW2FBJTaTi0A=; b=gyWeTNzlTl0DeF+0j42TkxN+JVx0t5Ty6AEA4GMo3p1pG1UeZWsjFN85M1+NC8ED7M waOdFNX9+wA2TZG1FisaLxU7kjiKBeQzbPepI+sZMIeJQ68SaVx3yoYRuUnrwq84e/XW BJpC6lGxL9t3BSdAprb4Jt0wUMzMRygmAiS0AcN50NdDGNAUKWJYvMvAbfDSIhhWMoHe ZalE7aBD98I/bc4zPzPNJe4vJVA6UUJPX9fRM/p11qNHyD37Reea/+unr6HMUCqHcg1T P/g0iPtav6PPCys55tJjAtkkJqqPnW+TXjMfoGnr38x2K+u6t6TN4s9MK7fF00BKC/Qz Hakw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=mDHtJHxDKIp9CgY2O+nZjtN8N0N6lB3CW2FBJTaTi0A=; b=gMMLRoJFixa0Sk05XiJ1qIeHjpWUQHjqh2CKjdr6IFYM/IUaM5m0yFlSUGMnjCaIKm 3xKC8lXixcx7AChhDBJTimXqpLc2iNPirzXNs2KB5EPHQo/O2Ms3pamLuGa8ygfZKC9v Y9AhVfcu/Hpr85MtUCxhbB/1uzXSm513COvJEOPJcpquedvVltxmB6H4k+qjZhPHCAeF dT8viwO7F/p2edtEXT9FQaIPkoqINQIQuzh0PkpGcmjbgpKvJ3KEeaC9aO0RXrf3fSa0 UZo6w3L5hvJxok3mOn0r+eHQlM0gh4fvOf/cxRWx3ndX08etvOLqvWtd2xNTgYlgvcrh uikw== X-Gm-Message-State: AOAM530kNp0C02vTNV5gD2ujON8ichk7GMcJ2BdlGkDCCnbkyXdOrIDT uEzHUKkSyU9Np8NeBAS9n325DYGKMf2dVc4zlmygbJzGXJhwFQ== X-Google-Smtp-Source: ABdhPJw8hWLwPNAhzCwQctQI+dhysoI8RR/URK0EQWh0dD/LVbWKdFbfaLlA/iTzKzaJ+EjITf+2+PQvD87dhbceFkQ= X-Received: by 2002:a67:f883:: with SMTP id h3mr169632vso.47.1606779370211; Mon, 30 Nov 2020 15:36:10 -0800 (PST) MIME-Version: 1.0 Received: by 2002:ab0:6ecb:0:0:0:0:0 with HTTP; Mon, 30 Nov 2020 15:36:09 -0800 (PST) In-Reply-To: <20201130153742.9163-2-johan@kernel.org> References: <20201130153742.9163-1-johan@kernel.org> <20201130153742.9163-2-johan@kernel.org> From: Mychaela Falconia Date: Mon, 30 Nov 2020 15:36:09 -0800 Message-ID: Subject: Re: [PATCH 1/5] tty: add port flag to suppress ready signalling on open To: Johan Hovold Cc: Greg Kroah-Hartman , Jiri Slaby , "Mychaela N . Falconia" , linux-serial@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Add a NORDY port flag to suppress raising the modem-control lines on > open to signal DTE readiness. > > This can be used to implement a NORDY termios control flag to complement > HUPCL, which controls lowering of the modem-control lines on final > close. > > Initially drivers can export the flag through sysfs, which also allows > control over the lines on first open. > > This can be use to prevent undesirable side-effects on open for > applications where the DTR and RTS lines are used for non-standard > purposes such as generating power-on and reset pulses. > > Signed-off-by: Johan Hovold Reviewed-by: Mychaela N. Falconia