On Tue, Jun 21, 2011 at 01:47:03PM +0200, Marek Szyprowski wrote: > > I also think that it is better to attach and to detach dma_map_ops > > dynamically. > > What's the point of such operations? Why do you want to change dma > mapping methods in runtime? That is dangerous. You have to make sure that there are no mappings granted to the the device driver before changing the dma_ops of a device at runtime. Otherwise existing mappings for a device may disappear and confuse the driver and the device. Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html