SCSI command (SP-OUT) failing on SLES 9 32-bit

[rohan a]

Hello,
        The SCSI command for LTO-4 drive based encryption (SPOUT
opcode = 0xB5) is failing on SLES 9 32-bit only and not on SLES 9 (64-
bit), SLES 10,11 or RHEL 4/5

Any idea why this is happening?

Error returned is : Invalid field in CDB

I am using ioctl() with the deprecated request SCSI_IOCTL_SEND_COMMAND
and not the SG3 driver.
However, only the SPOUT command is failing and none of the other SCSI
commands.
For ex: even the SPIN command (to obtain encryption status and
capabilities) works.

I even updated to SP4.

Any suggestions here?

Thanks
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