Re: [spi-devel-general] Re: SPI

[Vitaly W. <vw...@ru...>]

David Brownell wrote:

>On Wednesday 30 November 2005 12:25 am, Vitaly Wool wrote:
>  
>
>>Moreover, I've got a strong suspicion that spi_write_then_read may not 
>>work with DMA in some cases when compiled as a module.
>>    
>>
>
>I _know_ otherwise.  
>
Stop. Can you please explain the honored audience how you can _know_ 
that if you have *never* compiled your core as a module?

>By definition, memory from kmalloc() may be used
>with DMA.  
>
Ok... But you've used static declaration, haven't you?

>I'm still rather puzzled about why you keep making strange
>statements about DMA ... ones contrary to how Linux works.  Please
>review the relevant parts of Documentation/DMA-mapping.txt soon, like
>this one:
>
>  
>
Lemme ignore your advice here.

Vitaly