Am Mittwoch, 17. Februar 2010 11:18:01 schrieb Benjamin Herrenschmidt: > > No problem here. USB core does the mapping only if the low-level driver > > so requests. The only exception is in usb_buffer_alloc(), but that boils > > down to dma_alloc_coherent() > > Allright, so why do we need to "fix" anything ? Or is the whole thread > moot ? :-) The request a low-level driver does is all or nothing. Either DMA issues have to be handled by that driver alone, or a finer-grained description of the DMA requirements is needed. A fix using the latter approach is being worked on. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
