On Wednesday, April 20, 2016 2:44 AM, Ian Abbott wrote: > I've seen occasional (but unresolved) threads on the COMEDI mailing > lists from people getting the "unknown mite interrupt" messages, so it's > probably best to leave them in for now. > > For example, this one: > > https://groups.google.com/d/topic/comedi_list/dDH4BxqLhSk/discussion > > The two MITE status register values mentioned in posts in that thread > are 0x82808248 and 0x82888248 and the problem seems to be that the mite > status & CHSR_MxERR_mask is non-zero (specifically CHSR_MRERR) and that > is not currently handled. It might be safe to ignore, or it might not, > but we'd need to check the docs. Oops, forgot to add. My guess is that the people seeing this error on newer systems are getting the "Retry Limit Exceeded" error because of the newer machine they are trying to use the card in. Maybe the machine has more devices using DMA and the MITE chip is not getting serviced fast enough? Or maybe a BIOS or other setting to increase the DMA priority? The thread from the comedi_list is pretty old. If possible it would be nice to know if they are still seeing problems or have found some solution. Hartley _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
