On 11/21/07, Oliver Neukum <[EMAIL PROTECTED]> wrote: > Am Mittwoch 21 November 2007 schrieb Markus Rechberger: > > On 11/21/07, Markus Rechberger <[EMAIL PROTECTED]> wrote: > > > On 11/21/07, Mark Lord <[EMAIL PROTECTED]> 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? >
it's the usb_control_message which calls usb_kill_urb if I haven't got it wrong. (if you're looking for some other information please let me know) Although, I got a bit further with it. The error seems to happen earlier already. If I load the driver, and do not access the device after suspending all usb_control commands fail with -71 eproto. Reloading the driver doesn't help at tht point, only reconnecting the device does. The data is transfered using bulk transfer. Markus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
