Messages in this thread | | | Date | Fri, 20 Feb 2004 00:08:08 -0800 | From | David Brownell <> | Subject | Re: [linux-usb-devel] Re: [BK PATCH] USB update for 2.6.3 |
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Benjamin Herrenschmidt wrote:
> Yes. I also remember a time where the dma mask for the DMA API was all > broken too (would not be possible to map the PCI one on top of it), > but I think that got fixed.
I thought it was still broken. Last I compared different asm-* arch implementations of dma_supported(), the semantics were inconsistent. The "mask" was sometimes ignored, sometimes treated as an upper bound on the address, once I recall it even being used as a mask! Some of that inconsistency seemed to come from PCI though.
- Dave
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