Hi Alan, I've applied the patch you've sent in the other thread. It seems to work properly, I'm no longer seeing the DMA errors in my logs. I do still see some XactErrs when unplugging the device, but those are probably to be expected when unplugging a device. It seems this issue is resolved for me, then? The other issue I was having, with my tablet generating errors seems to be traceable to my new USB hub. I have no such problems with another hub. The new hub consists of two nested four port hubs, giving one 7 port hub, where the problem only occurs when using the inner hub. I'll try the hub on another os or kernel version to double check the hardware. Another thing I was seeing just now, is XactErrs when nothing is plugged into the (possibly faulty) hub. Interestingly enough, the retry counts there were negative, starting with -223. Looking at the code, I'm not so sure if this is supposed to happen. It seems that the qh->xacterrs variable is somehow large (255, since the retry count is 32 - xacterrs). This smells like an overflow, which probably shouldn't happen. I'll dig into this issue a bit more, probably in another thread (unless you think they are related?). Anything else you need from me to confirm the patch is ok? Gr. Matthijs
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