On Mon, Apr 29, 2013 at 01:02:19PM +0200, Oliver Neukum wrote: > On Thursday 10 January 2013 10:42:07 Sarah Sharp wrote: > > > The new debugging shows that the host is giving *two* short status > > completions for a TD. This only happens when the isoc TD is split into > > two TRBs because the buffer crosses a 64KB boundary. The completion > > event shows that none of the buffer in either TRB was sent. So this > > suggests a deeper hardware issue, and we may need to use bounce buffers > > to work around it. > > > > I'll need to file a bug with our hardware team and cook up a > > work-around. So don't send any patches just yet. > > Hi Sarah, > > has this issue been addressed? I looked into it, and it's not a hardware bug. It's caused by a change in how xHCI 1.0 hosts handle short packets, that I didn't catch before now. It's relatively harmless, but does need to get fixed. I've added it to my JIRA bug tracker, but it's a low priority bug at this point. Perhaps we just need to add the spurious success quirk for all xHCI 1.0 hosts? Sarah Sharp -- 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
