RE: [PATCH 05/11] PM / devfreq: governors: Return device frequency limits instead of user limits

[MyungJoo Ham]

>The performance, powersave and simpleondemand governors can return
>df->min/max_freq, which are the user defined frequency limits.
>update_devfreq() already takes care of adjusting the target frequency
>with the user limits if necessary, therefore we can return
>df->scaling_min/max_freq instead, which is the min/max frequency
>supported by the device at a given time (depending on the
>enabled/disabled OPPs)
>
>Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
>---
> drivers/devfreq/governor_performance.c    | 2 +-
> drivers/devfreq/governor_powersave.c      | 2 +-
> drivers/devfreq/governor_simpleondemand.c | 6 +++---
> 3 files changed, 5 insertions(+), 5 deletions(-)
>

Actually, even scaling_max_freq and scaling_min_freq are
covered centerally at devfreq.c:update_devfreq();

Wouldn't it be sufficient to return UINT_MAX for performance
and return UINT_MIN (0) for powersave, if the purpose is to
remove redundancy?

In the same sense, we may return UINT_MAX for freq-increasing
case for simpleondemand as well, because they are filtered
centrally anyway.

(This commit might be better merged to 4/11 in that case as well.)


Cheers,
MyungJoo