Hello Russell, > While I realise that, I'm telling you that the _problem_ is being > caused by the wrong handler being used. Okay, I believe you... (someone told me once, Russell is right, and if you do not believe him, he is still right ;-) > SA1100 and PXA have exactly the same setup. They use the correct > handler. Why is AT91 special? This remark is what convinced me :-)) I changed the interrupt handler from the simple_irq to the edge_irq, and it works...!! (I added a noop routine for that .ack part, because there is no ack) I believe I was too focussed on the masking bug in the RT kernel on the simple_irq() that I did not see that for the AT91 series the edge type interrupt handler also works... (even better...) What I thought was 1 single bug in the RT-kernel turned out to be a number of things together that aren't correct, even for mainline. So, to come to a conclusion: The masking bug in RT is still there in the simple_irq path, and masking has to be removed from the simple_irq code. Also for mainline. AT91 can live without simple_irq. I think we are in sync again... I will post a patch for the AT91 later on, after some more testing. Kind Regards, Remy - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
