2014-11-14 16:35 GMT+04:00 Krzysztof Hałasa <khalasa@xxxxxxx>: > The IRQs have to be acknowledged before they are serviced, otherwise some events > may be skipped. Also, acknowledging IRQs just before returning from the handler > doesn't leave enough time for the device to deassert the INTx line, and for > bridges to propagate this change. This resulted in twice the IRQ rate on ARMv6 > dual core CPU. Thanks! I'm not experienced in interaction with hardware in this regard... could you please point to some reading which explains this moment? Or you just know this from experience? The solo device specs are very terse about this, so I considered that it should work fine without regard to how fast we write back to that register. -- Andrey Utkin -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
