linux-kernel - Re: [RFC/PATCH 05/13] serial: omap: drop DMA support

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Message-ID: <CAMQu2gyGVhB63rn+G6B3nFLki5ib40C_2o2Bh1mBd8sw8wT_Ng@mail.gmail.com>
Date:	Tue, 21 Aug 2012 16:05:22 +0530
From:	"Shilimkar, Santosh" <santosh.shilimkar@...com>
To:	balbi@...com
Cc:	alan@...ux.intel.com, Tony Lindgren <tony@...mide.com>,
	Kevin Hilman <khilman@...com>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-serial@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Shubhrajyoti Datta <shubhrajyoti@...com>
Subject: Re: [RFC/PATCH 05/13] serial: omap: drop DMA support

On Tue, Aug 21, 2012 at 3:50 PM, Felipe Balbi <balbi@...com> wrote:
> On Tue, Aug 21, 2012 at 03:14:19PM +0530, Shilimkar, Santosh wrote:
>> On Tue, Aug 21, 2012 at 2:45 PM, Felipe Balbi <balbi@...com> wrote:
>> > The current support is known to be broken and
>> > a later patch will come re-adding it using
>> > dma engine API.
>> >
>> > Signed-off-by: Felipe Balbi <balbi@...com>
>> > ---
>> Thanks Felipe !!
>
> no problem.
>
>> One less driver now towards OMAP DMA
>> engine conversion.
>
> indeed :-) I'll take a closer look into rx timeout IRQ, but it looks
> like we can use it to kick dma only for "big" transfers... need to play
> with it for a while first, though.
>
Yep. The RX path with DMA is bit of difficult part to manage for
UART.

>> FWIW,
>> Acked-by: Santosh Shilimkar <santosh.shilimkar@...com>
>
> is this Ack for this patch only or the entire series ??
>
Two more patches to review and then I will do it for
full series on top of the cover-letter :-)

Regards
Santosh
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