Am Freitag, 29. Januar 2010 17:34:03 schrieb Catalin Marinas: > I was thinking about checking dev->bus->controller->dma_mask which the > code (though not the storage one) seems to imply that if the dma_mask is > 0, the HCD driver is only capable of PIO. That a HCD is capable of DMA need not imply that DMA is used for every transfer. > That would be a more general solution rather than going through each HCD > driver since my understanding is that flush_dcache_page() is only needed > together with the mass storage support. What about ub, nfs or nbd over a USB<->ethernet converter? This, I am afraid is best solved at the HCD or glue layer. 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
