[PATCH 1/2] dt: Add empty of_property_match_string() function

Thierry Reding thierry.reding at avionic-design.de
Fri Jun 1 15:59:20 EST 2012


* Thierry Reding wrote:
> * Thierry Reding wrote:
> > The latest series for the PWM subsystem is here[0]. However that version
> > doesn't contain the latest changes that require this. I haven't pushed those
> > changes yet because they cause the build to fail (because of these two
> > missing patches).
> 
> I just pushed the latest code to the for-next branch. That's the state that I
> was going to submit during the 3.5 merge window.
> 
> Thierry
> 
> > [0]: http://gitorious.org/linux-pwm/linux-pwm

Hi Grant,

Do you have any comments on this? I really want the PWM subsystem to go into
3.6, and for that to happen we need to find a solution for this. As I stated
previously the empty functions are needed to compile the PWM core in !OF
configurations.

Usually this would be solved by just #ifdef'ing the corresponding code, but
with the recent introduction of the config_enabled() and IS_ENABLED() macros
there seems to be a move to replace #ifdef usage with those in order to have
the corresponding code compile-checked in all configurations and have the
compiler throw away the unused code.

I believe that this is a good thing, but it will required these empty OF
functions to be added. If you don't find this an acceptable solution, please
let me know and I'll convert the OF-specific code in the PWM core to use
#ifdef instead.

Thanks,
Thierry
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