On Sat, 11 Jun 2016 13:02:44 +0100 Ben Dooks <bjdooks@xxxxxxxxxxxxxx> wrote: > out of interest, do you have a list of what the problems are? The trigger configuration for per-cpu interrupts silently fails (because set_irq_type cannot deal with them). Which means we're relying on whatever configuration the firmware has left in there. Also, the kernel defaults to considering the interrupt as edge. What saves most platforms so far is that they are using a GIC: 1) Most GIC implementations have their PPI configuration as RO, which means that we can't get it wrong. 2) If using a fasteoi handler, there is no significant difference in the flow between edge and level (we're relying on the HW dealing with it, so (1) is critical). If your GIC allows PPI configuration to be written and firmware gets it wrong, you'll miss interrupts. If you don't have a GIC, all bets are off. I've queued a number of patches to solve this, which I hope to send to tglx tomorrow (after looking at this weekend test run). Thanks, M. -- Jazz is not dead. It just smells funny. -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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