From patchwork Wed Apr 7 10:39:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 417169 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 2E135C4360C for ; Wed, 7 Apr 2021 10:40:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 09E50613CF for ; Wed, 7 Apr 2021 10:40:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351210AbhDGKkJ (ORCPT ); Wed, 7 Apr 2021 06:40:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:49080 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234963AbhDGKkA (ORCPT ); Wed, 7 Apr 2021 06:40:00 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 434C6613CD; Wed, 7 Apr 2021 10:39:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617791990; bh=hu1SUyANoCuT1Q13sYyBfBeEv1ilJfqrVkL1hySgzds=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cZQtfXD4kQGfJhgRishsh9vCk27Htx0VcaykWOTYh5wxpZtEyDhxHn3lzK4GzZ+kO BCiVXCbYzO/BGntozEt0iym3pyamy8vXIBxRzcePzgqwDV0QwjXCXIFq4URyeKhtoD C00wOnyQ3UWizDUIpazmnILrCeF3IeFNwhzYwoHxIUt6Sdvnfok+hG0lLjvgZwXuPi q8xqbhB4Q03C4x8VML9UCHsriafsRZBHBz5IzTiYGRuUM8w6lLGzU4cSwu0zb1IoNS skLaNmYEKfNyl5LCkaPAyuVtmErRfrSUlcrufOkv1229FVtOK3ahVlT+jm+/S0BW7d 2oNhHKN/lu4uw== Received: from johan by xi.lan with local (Exim 4.93.0.4) (envelope-from ) id 1lU5b5-0000F0-3U; Wed, 07 Apr 2021 12:39:43 +0200 From: Johan Hovold To: Johan Hovold Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 10/24] USB: serial: pl2303: fix TIOCGSERIAL implementation Date: Wed, 7 Apr 2021 12:39:11 +0200 Message-Id: <20210407103925.829-11-johan@kernel.org> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20210407103925.829-1-johan@kernel.org> References: <20210407103925.829-1-johan@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org TIOCSSERIAL is a horrid, underspecified, legacy interface which for most serial devices is only useful for setting the close_delay and closing_wait parameters. The port parameter is used to set the I/O port and does not make any sense to use for USB serial devices. The baud_base parameter could be used to set the UART base clock when it could not be detected but might as well be left unset when it is not known. The close_delay and closing_wait parameters returned by TIOCGSERIAL are specified in centiseconds. The driver does not yet support changing these, but let's report back the default values actually used (0.5 and 30 seconds, respectively). Signed-off-by: Johan Hovold --- drivers/usb/serial/pl2303.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index eed9acd1ae08..0455add8593a 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -946,8 +946,9 @@ static int pl2303_get_serial(struct tty_struct *tty, ss->type = PORT_16654; ss->line = port->minor; - ss->port = port->port_number; - ss->baud_base = 460800; + ss->close_delay = 50; + ss->closing_wait = 3000; + return 0; }