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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 CC841C54FCB for ; Wed, 22 Apr 2020 18:09:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD3E92098B for ; Wed, 22 Apr 2020 18:09:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587578943; bh=DbXSxiXMHu9tU9vMTNParw5iSEIHMpG8ZCFcfxstLUg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=mvh7PzAV5MdTbcsn4o0qvUi42JVmeNSMNilJJYdMDEjZLHAGkQtNDrWhcC95wzN7Y q78PedHv7RtHNSIolhJSNUMWOnetPR/ObaONp6NLt2EinGM0DbMJwf0ncF52PsQ7tU Z84+Hj/WGvtmCfH9HTtsHy+CIAseoIdq/EivrYYg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726232AbgDVSJD (ORCPT ); Wed, 22 Apr 2020 14:09:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:56946 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726082AbgDVSJD (ORCPT ); Wed, 22 Apr 2020 14:09:03 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4867B2076E; Wed, 22 Apr 2020 18:09:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587578942; bh=DbXSxiXMHu9tU9vMTNParw5iSEIHMpG8ZCFcfxstLUg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Y12gr1v8W3Cp5my1PFVQOqrT0SNBpbvuG4iD9FgpkkdHHdSLfpRXKfi0+6uOMVdWV dKVWetYESo596O1mJfxXE8Tkhhozi1bUCryhNmRDCs1TiAsHMY/3CF7hvaTANkoKoh FVDAUp8UhagDM3QQ8E2ewFDBizGrQFbskObzXK9Q= Date: Wed, 22 Apr 2020 20:09:00 +0200 From: Greg KH To: sean.wang@mediatek.com Cc: jslaby@suse.com, andriy.shevchenko@linux.intel.com, mika.westerberg@linux.intel.com, sr@denx.de, arnd@arndb.de, matthias.bgg@gmail.com, tthayer@opensource.altera.com, linux-mediatek@lists.infradead.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Steven Liu , Ryder Lee Subject: Re: [PATCH v3] tty: serial: don't do termios for BTIF Message-ID: <20200422180900.GA3454664@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-serial-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org On Thu, Apr 23, 2020 at 02:02:08AM +0800, sean.wang@mediatek.com wrote: > From: Sean Wang > > Bluetooth Interface (BTIF) is designed dedicatedly for MediaTek SOC with > BT in order to be instead of the UART interface between BT module and Host > CPU, and not exported to user space to access. > > As the UART design, BTIF will be an APB slave and can transmit or receive > data by MCU access, but doesn't provide termios function like baudrate and > flow control setup. Why does it matter? If the connection isn't exported to userspace, who would run those termios functions on the port? thanks, greg k-h