Re: Runtime PM framework and USB

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Am Mittwoch, 19. August 2009 17:22:49 schrieb Alan Stern:
> Oliver:
>
> It's time to think about converting the USB subsystem over to Rafael's
> new runtime PM framework.  It's highly compatible with the code we
> already have, except for one thing: The usage counters have to follow a
> strict get/put model.  In other words, we can't allow drivers to access
> the analog of intf->pm_usage_cnt directly, and we can't support
> usb_autopm_set_interface(), usb_autopm_enable(), or
> usb_autopm_disable().

Good, it shouldn't matter.

> For the most part I think this doesn't matter.  Those routines are used
> in only a few drivers, and it looks like they can be replaced with
> usb_autopm_get_interface() and usb_autopm_put_interface().  Still, it's
> worth checking carefully -- the first step of the conversion will be to
> make those replacements.
>
> In particular, do you agree this will be okay for the net/usb/kaweth,
> net/wimax/i2400m, and media/video/stk-webcam drivers?

I see no problem for these drivers and I'm doing the conversion right now.
So we can try to get the changes in early in the next merge window.

	Regards
		Oliver

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