On Thu, Oct 25 2007, Rolf Eike Beer wrote: > Am Donnerstag, 25. Oktober 2007 schrieb Arjan van de Ven: > > > Signed-off-by: Hugh Dickins <[EMAIL PROTECTED]> > > > --- > > > Whether this is a complete patch, suitable for all architectures, > > > I'm not sure: it builds, boots and runs correctly on the x86_32 box > > > in question, but you'll be a lot wiser than me about using dma_addr_t > > > for everyone. (Seems a bit of a shame to include <asm/types.h> here, > > > when I think all arches already get to include it one way or another, > > > typically via asm/scatterlist.h; but I guess it's safest to repeat > > > it.) > > > > there is a problem with this... sg_phys doesn't return an actual *dma* > > address.... at least not an address you can give to the device. > > Using dma_addr_t is thus a bit misleading..... > > Ok, then: how do I actually get such an address?
You use the dma mapping api, Documentation/DMA-mapping.txt -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
