Am Donnerstag, 15. Februar 2007 22:06 schrieb Alan Stern:
> There are two main disadvantages to the less-strict scheme. One is that
> the timing of autosuspends isn't as precise: If the timer goes off every
> 10 seconds, then a suspend could occur anywhere between 10 and 20 seconds
> after the device becomes idle. IMO this doesn't matter very much.
I've looked at this again. It seems to me that if usb_autoresume_device()
doesn't kill the timer, usb_probe_interface() will race with autosuspend.
Specifically, you might autosuspend an interface without calling its driver's
suspend() method, if the timer expires on another CPU.
Regards
Oliver
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