sleeping clk_[enable,disable]?

[linus.ml.walleij@gmail.com (Linus Walleij)]

A question here:

If you have a clocking hardware that would actually require
clk_[enable,disable] to
sleep in order to ascertain that the clock is actually in the
requested state when
you return from these functions, what can you do?

I could think of several solutions, like:

* Actually let clk_[enable,disable] sleep, make sure all drivers only calls them
  in thread context.

* Impose a state in the clk so it can be "in transition", then an
additional function
  clk_is_stable() which will also have to be added to most drivers but had the
  advantage of not violating the defined clk_[enable,disable] API.

* Throw in udelay():s after the clk_[enable,disable] calls, with some values
  that are unfortunately then spread out in the drivers instead of in the
  clk implementation.

Any ideas?

Linus Walleij