Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: loading firmware while usermodehelper disabled. | Date | Sat, 31 Dec 2011 16:59:48 +0100 |
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Am Samstag, 31. Dezember 2011, 16:33:12 schrieb Alan Stern:
> Nothing has changed in the USB layer -- it has always been true that > devices could be reset during a suspend/resume cycle. This isn't a > matter of how the stack is written or anything like that; some > motherboards simply do not provide suspend power to their USB > controllers. Or the firmware reinitializes the controllers and > attached devices during resume, forcing Linux's USB core to reset > every device on the affected buses. > > When it comes to suspend/resume, there are almost no guarantees. :-(
We are definitely going through do_unbind_rebind(). But I don't think it matters why we got there. We seem to be calling probe() too early. And we need to guarantee that a driver can request firmware in probe()
So something has changed in the resume code path further up.
Regards Oliver
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