Messages in this thread | | | Date | Wed, 21 Nov 2007 11:59:22 +0100 | From | "Markus Rechberger" <> | Subject | Re: USB deadlock after resume |
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On 11/21/07, Markus Rechberger <mrechberger@gmail.com> wrote: > On 11/21/07, Mark Lord <lkml@rtr.ca> wrote: > > Markus Rechberger wrote: > > > Hi, > > > > > > I'm looking at the linux uvc driver, and noticed after resuming my > > .. > > > > Pardon me.. what is the "uvc" driver? Which module/source file is that? > > > > http://linux-uvc.berlios.de/ it's not yet included in the kernel > sources although many distributions already ship it. > A "dry" run putting the device into sleep mode works fine (I added a > proc interface for calling those suspend/resume function). >
it's not just usb_set_interface that hangs actually. It seems to hang at
wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
in drivers/usb/core/urb.c after resuming. I disabled access to the usb subsystem in the uvc driver, although connecting any other usb storage fails too, just at the same point.
The hardware is: 00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 04) (8086:2658)
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