Hello Kurt, On 9/30/19 9:30 PM, Kurt Van Dijck wrote: > First patch will (try to) remove lost busoff conditions by not reading > the status register wihtout pending status interrupt. > This has ran for several weeks, and not produced any lost busoff (I'm > not sure it would have issued a true positive in this time). > I run this on a beaglebone-alike board. > > Next patch will tear c_can bottom halve isr out of napi so I can better control > it's RT priority without affecting other napi handlers in the same softirq. > > Last patch will combine top and bottom halve isr in case of force irq threading > like on an RT kernel. Having the irq split across 2 threads does not seem wise. I will have a better look at this, but can you also look at https://www.spinics.net/lists/linux-can/msg02302.html? It might solve part of your issue, but at least there is a merge conflict there, I think.. Regards, Jeroen