From: David Brownell <david-b@pacbell.net>
To: Vitaly Wool <vwool@ru.mvista.com>
Subject: Re: [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core
Date: Wed, 14 Dec 2005 11:02:52 -0800
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Cc: Greg KH <greg@kroah.com>, linux-kernel@vger.kernel.org,
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References: <20051212182026.4e393d5a.vwool@ru.mvista.com> <20051214171842.GB30546@kroah.com> <43A05C32.3070501@ru.mvista.com>
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On Wednesday 14 December 2005 9:53 am, Vitaly Wool wrote:

> 	 Sound cards behind the SPI bus will suffer a lot more 
> since it's their path to use wXrY functions (lotsa small transfers) 
> rather than WLAN's.

No, "stupid drivers will suffer"; nothing new.  Just observe
how the ads7846 touchscreen driver does small async transfers.

Remember too that sending audio data over SPI (rather than
say I2S, McBSP etc) is a different case than using it for the
mixer controls.

- Dave
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