Hi, On Thu, Apr 7, 2011 at 4:39 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 7 Apr 2011, Mian Yousaf Kaukab wrote: > >> On Wed, Apr 6, 2011 at 5:08 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: >> Performance reasons mainly. If short_not_ok is set, we can program the >> dma for the full buffer length. Otherwise we program it for each >> packet. > > What happens if short_not_ok is set and you program the DMA for the > full buffer length, but a short packet arrives? With the current state of things it will most likely hang and wait for reset. But I have already agreed with you that behavior should not change even if short_not_ok/short_not_expected is set or not so I need to fix this in my driver. > > Alan Stern > > Thanks, -- Mian Yousaf Kaukab -- 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
