linux-kernel - Re: [PATCH 15/15] tty: serial: 8250: omap: add dma support

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Message-ID: <20140829155551.GD2620@saruman.home>
Date:	Fri, 29 Aug 2014 10:55:51 -0500
From:	Felipe Balbi <balbi@...com>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
CC:	Tony Lindgren <tony@...mide.com>, <balbi@...com>,
	<linux-serial@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Paul Walmsley <paul@...an.com>
Subject: Re: [PATCH 15/15] tty: serial: 8250: omap: add dma support

On Fri, Aug 29, 2014 at 11:32:36AM +0200, Sebastian Andrzej Siewior wrote:
> On 08/29/2014 12:54 AM, Tony Lindgren wrote:
> > * Sebastian Andrzej Siewior <bigeasy@...utronix.de> [140828 12:37]:
> >> On 08/28/2014 06:46 PM, Tony Lindgren wrote:
> >>>
> >>> Sounds like there should be some way to clear that state.. I wonder
> >>> if omap-serial.c had something before it's DMA support was removed?
> >>
> >> Its DMA was removed? Like there was DMA support?
> > 
> > Yeah see commit 494574304711a333386e7dd5fd3ebbc3b7024994...
> 
> Interesting. I've been browsing that file and checking other trees and
> never noticed that it was there at some point. I only saw the pieces
> which looked it was there.

it was known to be broken and unused. There was no way to even enable
that code.

-- 
balbi

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