Scott Wood wrote:

quoted

I chose subsys_initcall() to increase the probability that fsldma is
already present when DMA clients are loaded/initialized and register.

If there's no dependency, why does it matter whether fsldma is already 
present?

Re-read my explanation, please.  Technically, it doesn't *matter* in that
nothing will break, but so what?  It's nicer if the DMA driver is already
available when the client drivers load, so that they can use the DMA facilities
right away.

-- 
Timur Tabi
Linux kernel developer at Freescale