On Mon, 2015-05-11 at 10:54 +0200, Oliver Neukum wrote:
> On Fri, 2015-05-08 at 10:01 -0500, Peter E. Berger wrote:
> > +#ifdef CONFIG_PM
> > +static int edge_suspend(struct usb_serial *serial, pm_message_t
> > message)
> > +{
> > + struct edgeport_serial *edge_serial =
> > usb_get_serial_data(serial);
> > +
> > + dev_dbg(&serial->dev->dev, "%s: serial:%s\n", __func__,
> > + serial->dev->serial);
> > + cancel_delayed_work_sync(&edge_serial->heartbeat_task);
> > + return 0;
> > +}
> > +
> > +/* Since usb-serial unbinds and reprobes on resume, the
> > re-initialization
> > + * (including re-scheduling heartbeat_task) is handled by
> > edge_startup().
> > + */
> > +static int edge_resume(struct usb_serial *serial)
> > +{
> > + dev_dbg(&serial->dev->dev, "%s: serial:%s\n", __func__,
> > + serial->dev->serial);
> > + return 0;
> > +}
> > +#endif
>
> Hi,
>
> you cancel the work on suspend, but what brings it back
> on resume?
>
> Regards
> Oliver
Hi Oliver:
The devices get disconnected and reprobed during resume, so
edge_startup() restarts the heartbeats.
Thanks.
--Peter
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