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SubjectRe: [linux-pm] s2ram slow (radeon) / failing (usb)
Date
Am Montag, 3. Mai 2010 23:11:54 schrieb Bruno Prémont:
> [ 477.543304] usb 1-2.1: usb_autosuspend_device: cnt 1 -> 0
> [ 477.543316] usbhid 1-2.1:1.1: __pm_runtime_suspend()!
> [ 477.543326] usbhid 1-2.1:1.1: __pm_runtime_suspend() returns 0!
> [ 477.543380] usbcore: registered new interface driver usbhid
> [ 477.549457] usbhid: USB HID core driver
>
> And suspend is freezing inside of hid_cancel_delayed_stuff(usbhid) call
> from hid_suspend() in drivers/hid/usbhid/hid-core.c ...
>
> Is it worth continuing iteration and adding further printk's down there?
> Jiri, what's your opinion on this?

Ugh. That looks like a bug in usbhid that I introduced. A fix is not trivial.
In short, I did not think the device could be undergoing a queued resumption
while suspend() is being called. I wonder why this is happening.

Regards
Oliver
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