Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: [linux-pm] wacom + runtime PM = AA deadlock | Date | Tue, 14 Sep 2010 17:30:38 +0200 |
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Am Dienstag, 14. September 2010, 17:23:15 schrieb Alan Stern: > On Tue, 14 Sep 2010, Oliver Neukum wrote: > > > > > Should I have used usb_autopm_get_interface_no_resume()? > > > > > > That actually would work. It's a good idea. The only drawback (not a > > > big one) is that if the device _was_ suspended with remote wakeup > > > enabled, doing this wouldn't turn off remote wakeup. I think that > > > doesn't matter. > > > > I am afraid it does matter as devices whose remote wakeup is enabled > > may draw more power. > > I doubt it, or at least, not very much more. They are still limited by > the USB spec as to the total amount of current they can draw while > suspended.
7.2.3 Sources of remote wakeup may draw 2.5mA when suspended as opposed to 0.5 mA
Regards Oliver
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