David Brownell wrote: > In that case you'd have to arrange for a short RX packet to > stop the DMA queue processing. (I've never seen peripheral > side hardware with DMA that works well enough to support this > type of implementation strategy.) Actually, the Atmel USBA controller (for AVR32 and AT91) has a "stop DMA on endpoint interrupt" bit which can probably be used to achieve this. But I don't think the driver is currently queueing DMA requests as aggressively as it could, so I don't think it will make any difference unless the queueing code is optimized a bit. Haavard -- 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
