Question on 2.4.21 unusual_devs list.

Question on 2.4.21 unusual_devs list.

[Doug Maxey]

Greetings,

  I have an interesting situation with 2 different TEAC FD-05PUB-x59
  floppy drives.  The x59 designation is on the external device label,
  the two samples in my lab are -159 and -259.

  Both show the same descriptors, and both indicate they are C/B/I
  devices according to lsusb.

  However, depending on the value defined in the unusual_dev list,
  currently US_PR_CB, I can only get the older -159 drive to
  configure.

  If the unusual_devs list is edited to show the supported protocol as
  US_PR_CBI, and get the other device -259 configured, and not the
  other.

  This leads to my questions:

  1) What is the the signifigance of the unusual_devs list.  I am
     infering the list exists to provide a way to configure devices
     that do no precisely aggree with the protocol actually supported

  2) if a given device is in the unusual_devs list, how does one also
     define that it might show as the other, that is to say, correctly?

++doug


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Re: Question on 2.4.21 unusual_devs list.

[Greg KH]

On Tue, Sep 09, 2003 at 02:17:56PM -0500, Doug Maxey wrote:
> Greetings,
> 
>   I have an interesting situation with 2 different TEAC FD-05PUB-x59
>   floppy drives.  The x59 designation is on the external device label,
>   the two samples in my lab are -159 and -259.
> 
>   Both show the same descriptors, and both indicate they are C/B/I
>   devices according to lsusb.
> 
>   However, depending on the value defined in the unusual_dev list,
>   currently US_PR_CB, I can only get the older -159 drive to
>   configure.
> 
>   If the unusual_devs list is edited to show the supported protocol as
>   US_PR_CBI, and get the other device -259 configured, and not the
>   other.
> 
>   This leads to my questions:
> 
>   1) What is the the signifigance of the unusual_devs list.  I am
>      infering the list exists to provide a way to configure devices
>      that do no precisely aggree with the protocol actually supported
> 
>   2) if a given device is in the unusual_devs list, how does one also
>      define that it might show as the other, that is to say, correctly?

Please send the output of /proc/bus/usb/devices for these two devices,
and all of this email again, to the linux-usb-devel mailing list.  The
hotplug list really isn't about USB specific stuff.

thanks,

greg k-h


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