Hi Rui,

Peter Feuerer writes:

> The bang-bang thermal governor uses a hysteresis to switch abruptly on
> or off a cooling device.  It is intended to control fans, which can
> not be throttled but just switched on or off.
> Bang-bang cannot be set as default governor as it is intended for
> special devices only.  For those special devices the driver needs to
> explicitely request it.
> 
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Zhang Rui <rui.zhang@intel.com>

Anything that prevents you from giving your acked-by?

[...]

-- 
kind regards,
--peter;