LinuxKPI: pm.h add pm_sleep_ptr and DEFINE_SIMPLE_DEV_PM_OPS

[bz]

Summary

Extend pm.h by pm_sleep_ptr and DEFINE_SIMPLE_DEV_PM_OPS().
Given this duplicates some parts I figured we could saves us the
as well.

MFC after: 3 days

Test Plan

I am still not sure what the difference between
DEFINE_SIMPLE_DEV_PM_OPS and SIMPLE_DEV_PM_OPS
is supposed to be or if we could define one to
the other. The fact that both exist made me keep
them separate for now.

[• hselasky]

sys/compat/linuxkpi/common/include/linux/pm.h

55–58

Another way to do this:

#if IS_ENABLED(CONFIG_PM_SLEEP)
#define PM_SLEEP_PASS(...) __VA_ARGS__
#else
#define PM_SLEEP_PASS(...)
#endif

There is no point initializing something to NULL here.

60

Isn't IS_ENABLED() already expanding to something with ()'s Maybe you can unwrap it one time?

[bz]

Unwrap (()) for pm_sleep_ptr

Restore #ifdef check to minialize changes to main (whitespace not retored).
Using the new macros probably was a silly idea indeed.

[• hselasky]

Looks good!

[• hselasky]

sys/compat/linuxkpi/common/include/linux/pm.h

56

This macro is no longer used? Cleanup?

[bz]

sys/compat/linuxkpi/common/include/linux/pm.h

56

it's still needed by a driver.