On Thursday 01 May 2008 17:58:26 Christoph Hellwig wrote: > On Thu, May 01, 2008 at 05:47:26PM +0200, Michael Buesch wrote: > > We've discussed that and this behaviour is not acceptable, as the driver > > must know about a possible fallback in case it can do 32bit DMA > > more efficiently than 64bit DMA, for example. > > That's what we have dma_get_required_mask() for. See > Documentation/DMA-API.txt. So well. I'm still unsure about the advantage of having some opencoded probe loop in the driver, instead of implementing it in a common place and doing all of it with a single API call. We can still call dma_get_required_mask() and adjust the mask to that in dma_set_mask_weak(). That can _additionally_ be done there. -- Greetings Michael. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
