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SubjectGetASF failed on DVD authentication

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?

Is there a patch for this?

Thanks.
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