Messages in this thread |  | | | Date | Tue, 16 Jun 2009 17:53:03 +0930 | | Subject | Re: is_device_dma_capable | | From | Malcom Blaney <> |
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Hi Fujita,
2009/6/16 FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>: > You use X86_32, right?
I have CONFIG_X86_32=y in my config file.
> > In 2.6.25, X86_32 and X86_64 had the own dma_alloc_coherent > implementations; X86_32 accepted a device having dma_mask that is not > initialized however X86_64 didn't, I think. > > When we merged them, we chose to prohibit a device having dma_mask > that is not initialized. I'm not sure the DMA docs say this but IMO > it's good to require drivers to set up dma_mask (and > coherent_dma_mask) properly if the drivers want DMA. >
If you could point me in the direction of how to set these values correctly, I would appreciate it.
thanks, Malcolm.
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