On Mon, 2016-08-29 at 13:26 +0800, Lu Baolu wrote: > + /* > + * Memory barrier to ensure hardware sees the trbs > + * enqueued above. > + */ > + wmb(); > + if (cycle) > + trb->field[3] |= cpu_to_le32(cycle); > + else > + trb->field[3] &= cpu_to_le32(~TRB_CYCLE); And this manipulation you don't need the hardware to see? 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
