Re: [PATCH v3] PM / OPP: discard duplicate OPPs

[Viresh Kumar]

On 20 May 2014 18:02, Nishanth Menon <nm@xxxxxx> wrote:
>> +               if (new_opp->u_volt == opp->u_volt)
>> +                       ret = -EEXIST;

As I mentioned in the other mail in same thread, I screwed up
again. I meant a s/==/!= here..

In words:
- If we are adding duplicate OPPs (both freq/volt same), return 0 as
we already have that.
- if we are adding OPPs with same key (same freq, diff volt), return
-EEXIST and also print both old and new values of both freq and volt.

> Else -> we now have two OPPs with the same key (same frequency, but
> different voltage) -> That does not make sense.
> Example: why would you add:
> If you already had {1GHz, 1.2V}
> and you attempted:
> {1GHz, 1.1V} (if you could do that, then you should added {1GHz, 1.1V}
> in the first place)
> OR
> {1GHz, 1.3V} (if you could do that, then you should add {1GHz, 1.3V}
> and the {1GHz, 1.2V} is wrong)

Exactly, this is why I wanted to return -EEXIST here with some prints.
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