On 11/22/2013 8:29 PM, Dan Williams wrote:
On Fri, Nov 22, 2013 at 7:50 AM, Rafael J. Wysocki
<rafael.j.wysocki@xxxxxxxxx> wrote:
On 11/22/2013 10:08 AM, Dan Williams wrote:
usbcore blocks powering off hub ports while a downstream source is
wakeup enabled. Once wakeup is disabled usbcore can try again to turn
off the parent port. Add a pm_runtime reference manipulation to retry a
port power down on disable, or pin the port active on enable.
Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Well, while this generally won't hurt, I'm not sure how it helps either,
because device_(disable|enable)_wakeup() don't touch any hardware and (for
now) they are only about wakeup from system suspend.
If a USB device's parent port is turned off prior to system suspend
then remote wakeup will be blocked.
Do you mean it won't wake up from system suspend? Or something else?
We could handle this internally
by correcting the setting at suspend time, but would need to wake the
port and possibly recover the connection to suspend. Just seemed
cleaner to notify the setting change.
I'm not sure I understand you correctly.
So you want your .runtime_resume() callback to be executed when the
system wakeup setting is changed so that you know that it has been
changed? Or do you mean something different?
Rafael
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