On Mon, 25 Mar 2013, Sarah Sharp wrote:

> On Mon, Mar 25, 2013 at 11:14:15PM +0100, Rafael J. Wysocki wrote:
> > On Monday, March 25, 2013 02:35:37 PM Sarah Sharp wrote:
> > > Alan,
> > > 
> > > Is there a way to disable runtime PM for a PCI host controller, but
> > > still allow the system to suspend/hibernate?
> > 
> > It should be.  Just write "on" to the controller's power/control file in 
> > sysfs.
> 
> And what's the equivalent function call?  We want to disable it within
> the xHCI driver.

Actually you don't want the equivalent function call, because then the
user could reverse its effect by writing "auto" back to the
power/control file.  You want something more permanent.

Call pm_runtime_get_noresume in your probe function and
pm_runtime_put_noidle in your release function.

Alan Stern

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