3.8.4: ohci question

3.8.4: ohci question

[Udo van den Heuvel]

Hello,

When my dmesg gives me a growing number of lines like the one below,
what is going on?

 ohci_hcd 0000:00:12.0: urb ffff88023025c500 path 2 ep1in 6c160000 cc 6
--> status -71

Please let me know!

Kind regards,
Udo

Re: 3.8.4: ohci question

[Bjorn Helgaas]

[+cc linux-usb]

On Wed, Mar 27, 2013 at 11:37 AM, Udo van den Heuvel <udovdh@xs4all.nl> wrote:
> Hello,
>
> When my dmesg gives me a growing number of lines like the one below,
> what is going on?
>
>  ohci_hcd 0000:00:12.0: urb ffff88023025c500 path 2 ep1in 6c160000 cc 6
> --> status -71
>
> Please let me know!
>
> Kind regards,
> Udo
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Re: 3.8.4: ohci question

[Alan Stern]

On Wed, 27 Mar 2013, Bjorn Helgaas wrote:

> [+cc linux-usb]
> 
> On Wed, Mar 27, 2013 at 11:37 AM, Udo van den Heuvel <udovdh@xs4all.nl> wrote:
> > Hello,
> >
> > When my dmesg gives me a growing number of lines like the one below,
> > what is going on?
> >
> >  ohci_hcd 0000:00:12.0: urb ffff88023025c500 path 2 ep1in 6c160000 cc 6
> > --> status -71
> >
> > Please let me know!

-71 errors indicate a low-level problem on the USB bus.  Generally it
means that the device isn't sending any packets.  Maybe the device's
firmware has crashed or maybe it has been disconnected.

Alan Stern

Re: 3.8.4: ohci question

[Udo van den Heuvel]

On 2013-03-28 15:35, Alan Stern wrote:
>>> When my dmesg gives me a growing number of lines like the one below,
>>> what is going on?
>>>
>>>  ohci_hcd 0000:00:12.0: urb ffff88023025c500 path 2 ep1in 6c160000 cc 6
>>> --> status -71
>>>
>>> Please let me know!
> 
> -71 errors indicate a low-level problem on the USB bus.  Generally it
> means that the device isn't sending any packets.  Maybe the device's
> firmware has crashed or maybe it has been disconnected.

Could it be due to a defect in the mainboard?
Or the device connected to that port?

Kind regards,
Udo

Re: 3.8.4: ohci question

[Alan Stern]

On Thu, 28 Mar 2013, Udo van den Heuvel wrote:

> On 2013-03-28 15:35, Alan Stern wrote:
> >>> When my dmesg gives me a growing number of lines like the one below,
> >>> what is going on?
> >>>
> >>>  ohci_hcd 0000:00:12.0: urb ffff88023025c500 path 2 ep1in 6c160000 cc 6
> >>> --> status -71
> >>>
> >>> Please let me know!
> > 
> > -71 errors indicate a low-level problem on the USB bus.  Generally it
> > means that the device isn't sending any packets.  Maybe the device's
> > firmware has crashed or maybe it has been disconnected.
> 
> Could it be due to a defect in the mainboard?
> Or the device connected to that port?

Yes.  Or it could be due to any number of other things.  Do you want to 
post a complete dmesg log?

Alan Stern