Re: [PATCH 00/49] iio: Tree wide switch from CONFIG_PM* to __maybe_unused etc.

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Hi Arnd, Jonathan,

Le dim., nov. 28 2021 at 10:17:55 +0100, Arnd Bergmann <arnd@xxxxxxxx> a écrit :
On Sat, Nov 27, 2021 at 7:09 PM Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
On Wed, 24 Nov 2021 15:10:06 +0000 Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote: > Le mer., nov. 24 2021 at 13:23:47 +0100, Arnd Bergmann <arnd@xxxxxxxx>
 >
 > So you want to rename the current macros (to e.g. *_PM_OPS_LEGACY)
 > everywhere so that new ones can be defined?
 >
> What about we introduce new macros, and just deprecate the old ones
 > (with e.g. a checkpatch warning)? That would be way less work.

 Sounds like a sensible approach to me. If Arnd is happy with that we
 can move forwards and get the bikshedding on the naming started.

I suggested renaming the current macros as a way to avoid having to
come up with new names. If you have an idea for a new name that makes
sense in the long run, please just go ahead with that.

Yes, I totally understand that. But renaming such a widespread macro sounds like a huge undertaking...

What about:

#define SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)    \
   .suspend = pm_sleep_ptr(suspend_fn),              \
   .resume = pm_sleep_ptr(resume_fn),                \
...

#ifndef CONFIG_PM_SLEEP
#define SET_SYSTEM_SLEEP_PM_OPS(a, b) SYSTEM_SLEEP_PM_OPS(a, b)
#else
#define SET_SYSTEM_SLEEP_PM_OPS(a, b)
#endif


#define DEFINE_SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \
static const struct dev_pm_ops name = {                       \
   SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn),               \
}


SET_SYSTEM_SLEEP_PM_OPS -> SYSTEM_SLEEP_PM_OPS, with the old one now defined from the new one;
SIMPLE_DEV_PM_OPS -> DEFINE_SIMPLE_DEV_PM_OPS.

Thoughts?

Cheers,
-Paul





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