On Tue, Jun 21, 2011 at 12:06 AM, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote: > Wrong - there is a difference. For pre-ARMv6 CPUs, it returns memory > with different attributes from DMA coherent memory. > > And we're not going to sweep away pre-ARMv6 CPUs any time soon. So > you can't ignore dma_alloc_writecombine() which must remain to sanely > support framebuffers. > OK. Thanks. Then, I think we can implement dma_alloc_writecombine() away from dma_map_ops. IMHO, those devices that use dma_alloc_writecombine() are enough with the default dma_map_ops. Removing a member from dma_map_ops is too heavy work. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href