Re: [linux-usb-devel] Re: 2.6.13-mm1

[Alan Stern]

On Thu, 1 Sep 2005, Andrew Morton wrote:

> Reuben Farrelly <reuben-lkml@xxxxxxxx> wrote:

> > I'm also observing some USB messages logged:
> > 
> > Sep  2 13:26:22 tornado kernel: usb 5-1: new full speed USB device using 
> > uhci_hcd and address 13
> > Sep  2 13:26:22 tornado kernel: drivers/usb/class/usblp.c: usblp0: USB 
> > Bidirectional printer dev 13 if 0 alt 0 proto 2 vid 0x03F0 pid 0x6204
> > Sep  2 13:26:23 tornado kernel: hub 5-0:1.0: port 1 disabled by hub (EMI?), 
> > re-enabling...

This message means pretty much what it says: noise or something else 
caused the connection to be disabled.  In theory this could be caused by a 
problem with the host controller, the cable, or the printer.  Does this 
happen consistently with 2.6.13-mm1?  Did it happen with 2.6.12?

> > Sep  2 13:26:23 tornado kernel: usb 5-1: USB disconnect, address 13
> > Sep  2 13:26:23 tornado kernel: drivers/usb/class/usblp.c: usblp0: removed
> > Sep  2 13:26:23 tornado kernel: usb 5-1: new full speed USB device using 
> > uhci_hcd and address 14
> > Sep  2 13:26:23 tornado kernel: usb 5-1: device descriptor read/64, error -71
> > Sep  2 13:26:23 tornado kernel: usb 5-1: device descriptor read/64, error -71
> > Sep  2 13:26:23 tornado kernel: usb 5-1: new full speed USB device using 
> > uhci_hcd and address 15
> > Sep  2 13:26:23 tornado kernel: usb 5-1: device descriptor read/all, error -71
> > Sep  2 13:26:23 tornado kernel: usb 5-1: new full speed USB device using 
> > uhci_hcd and address 16
> > Sep  2 13:26:23 tornado kernel: usb 5-1: can't set config #1, error -71
> > Sep  2 13:26:23 tornado kernel: usb 5-1: new full speed USB device using 
> > uhci_hcd and address 17
> > Sep  2 13:26:24 tornado kernel: usb 5-1: unable to read config index 0 
> > descriptor/start
> > Sep  2 13:26:24 tornado kernel: usb 5-1: can't read configurations, error -71

If it's not already in 2.6.13-mm1, this patch may help with the 
reinitialization:

http://marc.theaimsgroup.com/?l=linux-usb-devel&m=112551468126219&w=2

Alan Stern

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