Messages in this thread | | | Date | Sun, 12 Nov 2006 11:31:24 -0500 (EST) | From | Alan Stern <> | Subject | Re: [linux-usb-devel] 2.6.19-rc5 regression: can't disable OHCI wakeup via sysfs |
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On Sat, 11 Nov 2006, Andrey Borzenkov wrote:
> On Tuesday 20 June 2006 00:12, David Brownell wrote: > > > > > > An alternative (but post-boot) workaround _should_ be > > > > > > > > > > > > echo disabled > /sys/bus/pci/devices/0000:00:02.0/power/wakeup > > > > > > > > Did that work? > > > > > > No. But > > > > > > echo -n disabled > > > > /sys/devices/pci0000:00/0000:00:02.0/usb1/power/wakeup > > > > That's what I meant ... thanks, and sorry for the confusion. > > this does not work anymore in current rc5. After writing > cat /sys/devices/pci0000:00/0000:00:02.0/usb1/power/wakeup shows "disabled" > but messages continue to be logged. > > Anything I can do to help narrow it down?
Undoubtedly this change in behavior is caused by the "autostop" code I added to ohci-hcd. It doesn't check the "wakeup" attribute.
Dave, is there any clue about exactly what triggers the immediate wakeup? If you could tell me what to test for, I could try writing a patch to fix it. Perhaps the driver needs a "resume_detect_is_broken" quirk.
Andrey, if you aren't using USB at all (you mentioned that no devices were plugged in), you can simply do "rmmod ohci-hcd" to stop all those log messages.
Alan Stern
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