> George Spelvin wrote: > In other words, your step 4/ cannot actually happen. What if you consider interrupts of higher priority occurring? That could cause delays in your servicing of X. I've encountered this before with high speed ports on multiple interrupts, where one port continually steals time from another. ..Chris -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html