Re: GetASF failed on DVD authentication

[Jens Axboe]

On Fri, Jan 02 2004, Jeff Chua wrote:
> 
> Got the following error while authenticating DVD ...
> 
> GetASF failed
> N/A, invalidating: Function not implemented
> N/A, invalidating: Function not implemented
> N/A, invalidating: Function not implemented
> Request AGID [1]...     Request AGID [2]...     Request AGID [3]...
> Cannot get AGID
> 
> 
> This error happens only on USB DVD drive using /dev/scd0 ...
> 
> Linux version is 2.4.24-pre3.
> 
> 
> Module                  Size  Used by    Tainted: P
> ehci-hcd               15368   0  (unused)
> usb-storage            23800   0
> usbcore                56672   1  [ehci-hcd usb-storage]
> ds                      6504   2
> yenta_socket            9568   2
> isofs                  17580   0  (autoclean)
> loop                    8408   0  (autoclean)
> sr_mod                 12560   0  (autoclean)
> cdrom                  27296   0  (autoclean) [sr_mod]
> scsi_mod               86472   2  (autoclean) [usb-storage sr_mod]
> 
> 
> 
> Problem does not happen on _real_ IDE DVD drive (/dev/hdc). Could it be
> something to do with usb-storage or the sg module? Looks like the code
> does not implement the DVD_LU_SEND_ASF DVD_AUTH ioctl?

sr passes those ioctls through, or rather the uniform layer handles
them.

I can't say what goes wrong from the info above. Do you get any kernel
messages?

> Is there a patch for this?

Good one ;) Please make a proper bug report, you don't even include
drive info.

-- 
Jens Axboe

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