> Note also that this makes such cards out of spec, PCI wise. Many
> PCI sound cards have these issues as well (most implement the lower
> 24 bits, and use the upper bits in their DMA descriptors for control
> information, supposedly to save logic gates in the hw or to simplify
> it in some other way).
I haven't found anything obvious under drivers/sound.
They all use GFP_DMA and assume this means that the PCI bus mastering
address used for such a physical page will also be below 16MB, much of
drivers/sound has portability quirks like this.
Later,
David S. Miller
davem@redhat.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/