On Mon, 24 Sep 2012, Ming Lei wrote:
> On Mon, Sep 24, 2012 at 12:09 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>
> > No, you can still handle the other case. You need to report the
> > condition to the PM core, say by calling pm_wakeup_event().
>
> Good point, so kind of below code should be added to usb_suspend_both
> to handle the situation centralizedly:
>
> if (!PMSG_IS_AUTO(msg)) {
> if (hdev->do_remote_wakeup && status == -EBUSY)
> pm_wakeup_event(&hdev->dev, timeout)
> status = 0;
> }
No. Drivers can return -EBUSY for other reasons besides a pending
wakeup. They will have to handle wakeups by themselves.
> For hub devices, the 'timeout' should be a bit long since khubd has been
> frozen.
Yeah, probably around a second or two.
Alan Stern
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