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Date:   Tue, 5 May 2020 13:10:28 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     sean.wang@...iatek.com
Cc:     jslaby@...e.com, andriy.shevchenko@...ux.intel.com,
        mika.westerberg@...ux.intel.com, sr@...x.de, arnd@...db.de,
        matthias.bgg@...il.com, tthayer@...nsource.altera.com,
        linux-mediatek@...ts.infradead.org, linux-serial@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Steven Liu <steven.liu@...iatek.com>,
        Ryder Lee <ryder.lee@...iatek.com>
Subject: Re: [PATCH v3] tty: serial: don't do termios for BTIF

On Wed, Apr 22, 2020 at 08:09:00PM +0200, Greg KH wrote:
> On Thu, Apr 23, 2020 at 02:02:08AM +0800, sean.wang@...iatek.com wrote:
> > From: Sean Wang <sean.wang@...iatek.com>
> > 
> > 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?

Dropping from my patch queues due to a lack of response, please address
this question when you resend this.

greg k-h

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