Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: USB deadlock after resume | Date | Wed, 21 Nov 2007 12:46:39 +0100 |
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Am Mittwoch 21 November 2007 schrieb Markus Rechberger: > 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.
Which URB is usb_kill_urb() called for?
Regards Oliver
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