On Thu, 21 Mar 2013 13:53:34 -0700 Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> wrote: > On Mon, Mar 18, 2013 at 05:03:07PM -0700, Stephen Hemminger wrote: > > On Mon, 18 Mar 2013 15:37:30 -0700 > > Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> wrote: > > > > > On Mon, Mar 18, 2013 at 02:26:39PM -0700, Stephen Hemminger wrote: > > > > The xHCI warnings go away, but using 3.9-rc3 gives a new warning from USB. > > > > Not sure what colord is doing, I have not color controlled devices on USB, is it > > > > searching for a scanner (there is none)? > > > > > > Possibly? It looks like the USB device was suspended, and then woken up > > > so that colord could send it a message. The device never responds to > > > the control transfer, and the request to cancel the URB never completes. > > > Not good all around. > > > > > > Can you turn on CONFIG_USB_DEBUG and CONFIG_USB_XHCI_HCD_DEBUGGING, and > > > send me the dmesg from boot? I know it will be a pretty big file, but > > > I'd like to figure out what the heck colord is doing, and why URBs > > > aren't being canceled properly. > > > > Ok, see attached. > > Hmm, I don't see any lockdep warnings in dmesg you sent me, so I can't > really tell what's going on. If you can get the lockdep to trigger with > the additional debugging, please email the log to me. In the meantime, > I'll queue the patch that makes the suspend resume warnings go away. > > On a side note, it's really aggravating that some userspace program like > colord is continually polling your USB devices, which is making the bus > come out of suspend. The only reason to poll like that should be for > USB mass storage devices, to detect medium change. It would certainly > improve your power management if we could get colord to stop polling USB > devices continually. > > Sarah Sharp I may go out on a limb and look at colord internals. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
