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

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Message-ID: <20120821103438.GQ10347@arwen.pp.htv.fi>
Date:	Tue, 21 Aug 2012 13:34:39 +0300
From:	Felipe Balbi <balbi@...com>
To:	"Shilimkar, Santosh" <santosh.shilimkar@...com>
Cc:	balbi@...com, 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 04:05:22PM +0530, Shilimkar, Santosh wrote:
> 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 :-)

cool, thanks

-- 
balbi

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