On Fri, Dec 28, 2012 at 05:14:58PM +0800, Axel Lin wrote: > Use DIV_ROUND_UP to prevent truncation by integer division issue. > This ensures we return enough delay time.
This bit is OK. > Since the delay is required only if the voltage is increasing, > and we know both old_selector and new_selector. > We can check it earlier, for linear mapping, by simply compare > new_selector with old_selector. This is generally a reasonable assumption but it's not a bug fix, it's an optimisation, and we should be doing it in core code not in a specific driver.
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