linux-kernel - Re: [PATCH v4] tty: serial: men_z135_uart: Fix driver for changes in hardware

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Message-ID: <5457F30F.2030203@hurleysoftware.com>
Date:	Mon, 03 Nov 2014 16:26:39 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Johannes Thumshirn <johannes.thumshirn@....de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>
CC:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] tty: serial: men_z135_uart: Fix driver for changes
 in hardware

On 11/03/2014 04:01 PM, Peter Hurley wrote:
> On 11/03/2014 11:05 AM, Johannes Thumshirn wrote:
>> * Enable the handling of UART core's automatic flow control feature.
>>   When AFE is active disable generation of modem status IRQs.
> 
> So HUPCL doesn't work when CRTSCTS is set?

Sorry, I meant !CLOCAL. IOW,

'So !CLOCAL doesn't work when CRTSCTS is set?'

> Is this because there's actually a problem with the IP core that
> MSIs trash the autoCTS state, or is the problem that the driver
> just shouldn't be calling uart_handle_cts_change() when autoCTS is
> on?

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