On Fri, 18 May 2007 09:30:09 -0700,
"Williams, Dan J" <dan.j.williams@intel.com> wrote:

quoted text
> When CONFIG_DMA_ENGINE=n async_tx_find_channel takes the form:
> ... async_tx_find_channel( ... )
> {
> 	return NULL;
> }
> 
> So in the S390 case the entire asynchronous path will be compiled away.

Unfortunately, do_async_xor() (and others) is not ifdef'ed and contains
dma_map_page(), which led to the compile failure...
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