It's nearly always better to take interrupts than poll. A device driver that leaves the game to execute game code, putting results on a queue the game can test in it's poll loop, makes the UI responsive. Otherwise it'd hang every time a write to disk occurred, waiting for seek, then shifing the bytes out. Not a benefit to anybody.
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That's called 'embedded' and it has it's place.
It's nearly always better to take interrupts than poll. A device driver that leaves the game to execute game code, putting results on a queue the game can test in it's poll loop, makes the UI responsive. Otherwise it'd hang every time a write to disk occurred, waiting for seek, then shifing the bytes out. Not a benefit to anybody.