Re: [PATCH v2] TTY: serial, add pm function

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> Also, why does this driver need something that the hundreds of other
> serial drivers we have in-kernel today do not?  What makes it special
> over everything else?

We certainly will need power management hooks on the tty layer -
probably they belong on the tty_port operations.

Several things have happened that make it more relevant

- power levels have come down to the point that serial ports are no
  longer off the radar

- quite a few embedded and tablet devices have internal serial busses
  where turning off ports and stuff behind them matters.


Alan
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