Dear List, I have an interesting problem on 3.0.35 with the rt56 patch on ARM. I have some external events that drive my ISR, which I have set it up as non_threaded one. When the interrupt rate is low, 1.8msec things are going fine, but when the rate is higher, the wake_up call from the isr does not return. The system is frozen. No Magic SysRq. Nothing. All will work fine once I change my ISR to be a threaded one. Any ideas where to search? Kind regards, Andy -- 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