On Sat, Oct 23, 2004 at 04:38:15PM +0200, Bruno Randolf wrote: > would it be possible to use CONFIG_NONCOHERENT_IO=y only for USB, and not PCI? > we have PCI cards (prism54) which only work without CONFIG_NONCOHERENT_IO, so > at the moment we can either have USB host or prism54 based PCI cards... At the moment you can use such a partially coherent system with with CONFIG_NONCOHERENT_IO. It should work but of course not be overly efficient. Supporting I/O coherency on a per device base is on the to do list. Ralf
