[QUERY] amba/pl022: DMA channel allocation always fail.

On 05/13/2011 08:01 PM, Linus Walleij wrote:

2011/5/13 viresh kumar [off-list ref]:

quoted

amba/pl022 and my dma driver dw_dmac.c, both have registered init() routines
with subsys_initcall(). Now at bootup, spi boots up before DMA and so DMA
channels are never available at spi probe.

What should be done to solve this issue?

If you check drivers/dma/ste_dma40.c you can see that our solution was to
simply move the DMA engine to arch_initcall().

Which sort of makes sense for a DMA engine.

Does this work for dw_dmac.c?

Yes, it worked here too..

-- 
viresh