Re: [PATCH v2] fsl-dma: allow Freescale Elo DMA driver to be compiled as a module

Timur Tabi wrote:

There are no dependencies.  fsldma registers with the DMA engine,
which is always built in-kernel.  The DMA engine is what handles
linking DMA clients to DMA drivers. The DMA clients get a callback
whenever a DMA driver registers with the DMA engine.  If the DMA
driver is already registered when the client registers, then the
client will get a callback immediately after it registers.

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?

-Scott