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[23.128.96.18]) by mx.google.com with ESMTP id p17si413093ejw.23.2020.11.30.23.21.59; Mon, 30 Nov 2020 23:22:22 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=auWJKdwF; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727871AbgLAHTZ (ORCPT + 99 others); Tue, 1 Dec 2020 02:19:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727102AbgLAHTZ (ORCPT ); Tue, 1 Dec 2020 02:19:25 -0500 Received: from mail-vs1-xe44.google.com (mail-vs1-xe44.google.com [IPv6:2607:f8b0:4864:20::e44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E0EA7C0613CF; Mon, 30 Nov 2020 23:18:44 -0800 (PST) Received: by mail-vs1-xe44.google.com with SMTP id x4so390385vsp.7; Mon, 30 Nov 2020 23:18:44 -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=3/mAGTVPuz8+dqCn7++T3X3NmDsHTQaAJoz4dS/tN7E=; b=auWJKdwFapW8VX4/y3BkFf+mmYV3watyYsEC+9pDL8BldKvxH+MBSS0hI5zL4sJM8T FFW26mgohEHlZc6SdDK7vDTVBerbDzGoVuyrXDfrDgdbphybQUwW7uGnepyiXYWjCXIO xL/GCIOyE3znX6rKE38rYNNdka5jIjlWF0qi9FR7w/94GSvLDWy877K3VTaA23TPzO3D eztMMwLhlaLc9mBNJhCnVWWWcAgo9QWqTxZAi85tGJu26yVsiQMRPZnagIf1b+qdSgOB JUBBpBshDJvnCRm78xyMLk7SnryKBUrXnJf8qZO4m7B1mQBDuyy3fIJ0dZkcolnoLxbW SERg== 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=3/mAGTVPuz8+dqCn7++T3X3NmDsHTQaAJoz4dS/tN7E=; b=NO3hcW7wr5xalLuYmTr07xUPVe7CvhemoNDfkaT/ddk6ejquDDvWvjg5UX5Ta0aAjY GiwJDXgR7dD4ORhxCjLsbzXKYf+B0K6TRuGosNJp99cgen0NsB0fBn0l7upx9Qi20MRE NjAvZfnyan7iOYFsYNlZKK1G74S2OPEKIYHBEUh/wEWX+RUKBfNQt/KEzFPAVgPPCxxt nJabc8KnR3eYGXTLIHSSAM7cxkJYOzes2IZ9r5G5LoVgMGteSyBBJgnqlFpaRNvcYjDc g5PwmlQT9GVI+OtKQtlYAH9h1gPBnWtksmQOWAUNhVs6QYk0szJkpgUpy3YW+IvDyZV/ nifw== X-Gm-Message-State: AOAM5300zXl/XGjwNveTmS36AZ+MaRa3LOzVy4OJ/52skwHYG6SjTWfI zMv4h74mk/xLEHTlxkF7rTCE3SBNJvm+yQh7A80= X-Received: by 2002:a05:6102:d1:: with SMTP id u17mr1333362vsp.8.1606807124142; Mon, 30 Nov 2020 23:18:44 -0800 (PST) MIME-Version: 1.0 Received: by 2002:ab0:6ecb:0:0:0:0:0 with HTTP; Mon, 30 Nov 2020 23:18:43 -0800 (PST) In-Reply-To: References: <20201130153742.9163-1-johan@kernel.org> From: Mychaela Falconia Date: Mon, 30 Nov 2020 23:18:43 -0800 Message-ID: Subject: Re: [PATCH 0/5] tty: add flag to suppress ready signalling on open To: Jiri Slaby Cc: Johan Hovold , Greg Kroah-Hartman , "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 On 11/30/20, Jiri Slaby wrote: > The difference to other control flags is that open raises DTR/RTS in any > case (i.e. including O_NONBLOCK) Yes, this is the exact root-cause problem I am trying to fix, with Johan's help. > -- provided baud rate is set (and it is > for casual serials). That means you cannot open a port to configure it > (using e.g. setserial) without actually raising the DTR/RTS. Exactly. M~