On Tue, 2012-05-15 at 10:37 -0400, Alan Stern wrote:
> On Tue, 15 May 2012, Lin Ming wrote:
>
> > Add ->runtime_pm callback and ->pm_status to request queue.
> > As an example, implement a simple queue runtime_pm callback
> > in sd driver.
>
> > +static int sd_runtime_pm_fn(struct request_queue *q, pm_message_t mesg)
> > +{
> > + struct scsi_device *sdp = q->queuedata;
> > +
> > + if (mesg.event == PM_EVENT_SUSPEND) {
> > + q->pm_status = RPM_SUSPENDING;
> > + pm_runtime_put(&sdp->sdev_gendev);
> > + }
> > + else if (mesg.event == PM_EVENT_RESUME) {
> > + q->pm_status = RPM_RESUMING;
> > + pm_runtime_get(&sdp->sdev_gendev);
> > + }
>
> Don't use pm_message_t arguments for runtime PM. Implement separate
> routines for suspend and resume.
OK, I'll add 2 callbacks to request_queue.
runtime_pm_fn runtime_suspend;
runtime_pm_fn runtime_resume;
>
> Alan Stern
>
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