Messages in this thread | | | Date | Thu, 25 Sep 2008 13:47:52 -0500 | From | "Timur Tabi" <> | Subject | Re: [PATCH v2] fsl-dma: allow Freescale Elo DMA driver to be compiled as a module |
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On Thu, Sep 25, 2008 at 1:40 PM, Scott Wood <scottwood@freescale.com> wrote:
> If there's a dependency there, how will it work when this is built as a > module?
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.
-- Timur Tabi Linux kernel developer at Freescale
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