Runtime PM support in serial core?

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Hi!

Today I discovered that runtime PM rather broken in 8250 _by design_. It
definitely requires irq_safe flag to be set in runtime PM. But that flag
demolishes an effort since it keeps parent (and thus all other devices
which parent needs to be on) always on.

The question is is somebody is going to fix this and when?

-- 
Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
Intel Finland Oy
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