linux-kernel - Re: [PATCH 02/13] dmaengine: Introduce dma_request_slave_channel_compat

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Message-ID: <CAHp75Ve+n0PhOJKu+=y9_zuqC1rSBTdBSjHAdu6BKK0FzDmE0A@mail.gmail.com>
Date:	Wed, 18 Nov 2015 18:00:41 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Peter Ujfalusi <peter.ujfalusi@...com>,
	Vinod Koul <vinod.koul@...el.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Tony Lindgren <tony@...mide.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dan Williams <dan.j.williams@...el.com>,
	dmaengine <dmaengine@...r.kernel.org>,
	"linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	Linux MMC List <linux-mmc@...r.kernel.org>,
	linux-crypto <linux-crypto@...r.kernel.org>,
	linux-spi <linux-spi@...r.kernel.org>,
	Linux Media Mailing List <linux-media@...r.kernel.org>,
	ALSA Development Mailing List <alsa-devel@...a-project.org>
Subject: Re: [PATCH 02/13] dmaengine: Introduce dma_request_slave_channel_compat_reason()

On Wed, Nov 18, 2015 at 5:51 PM, Arnd Bergmann <arnd@...db.de> wrote:
> On Wednesday 18 November 2015 17:43:04 Andy Shevchenko wrote:
>> >
>> > I assume that the sst-firmware.c case is a mistake, it should just use a
>> > plain DMA_SLAVE and not DMA_MEMCPY.
>>
>> Other way around.
>>
>
> Ok, I see. In that case I guess it also shouldn't call
> dmaengine_slave_config(), right? I don't think that's valid
> on a MEMCPY channel.

Hmm… That's right, though I suspect still one thing why it's done this
way. Let's ask Vinod and Liam about that.

-- 
With Best Regards,
Andy Shevchenko
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