linux-kernel - Re: [PATCH 5/5] RFC spi: sun4i: add DMA support

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Message-ID: <20160530112610.GJ29837@sirena.org.uk>
Date:	Mon, 30 May 2016 12:26:10 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Michal Suchanek <hramrach@...il.com>
Cc:	linux-sunxi@...glegroups.com,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Chen-Yu Tsai <wens@...e.org>, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] RFC spi: sun4i: add DMA support

On Thu, May 26, 2016 at 07:25:25PM -0000, Michal Suchanek wrote:

>  - fallback to previous behaviour when DMA initialization fails
> 
>    + this has the problem that when the driver happens to load before the dma
>      driver it will not use dma - can be addressed with a module parameter

No, you should pay attention to the error you are getting and let probe
deferral happen if that's the error you get.

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