Mailinglist Archive: opensuse-kernel (68 mails)

[Greg KH <gregkh@xxxxxxx>]

On Fri, Jul 23, 2010 at 02:30:56PM +0200, Bruno Friedmann wrote:
> On 07/23/2010 02:25 PM, Greg KH wrote:
> > On Fri, Jul 23, 2010 at 02:11:38PM +0200, Bruno Friedmann wrote:
> > > Hi all, I'm now using a new device usb3 ready.
> > >
> > > But hot-pluging it drive you nowhere
> > > dmesg full of
> > > xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
> >
> > Does the device still work properly, even with that message?
> >
> > thanks,
> >
> > greg k-h
>
> Not everything on the device stall and it's just loose.

What do you mean by that?

> First plug I was thinking it's works so I fired fdisk and build a partition.
> Using w to write on it, are now running, even if I disconnect the device 
> after having constant
>
> [706143.616465] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
> [706143.624523] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
> [706143.632588] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
> [706143.640660] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
> [706143.649079] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint

So it works properly?

Is this a USB 3.0 storage device only?  If so, we don't have a Linux
driver for it (no operating system does), so it might not work to its
full capabilities yet.

USB 3 is still under heavy development.  The basics are there, but the
full speed improvement is still being worked on (see the changes in the
linux-next tree for examples of major speedups and lots of bug fixes.)

If you drop back to USB 2.0 controller speeds, does the device run
properly?

thanks,

greg k-h
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