MFC r317745:
Don't bother retrying errors for encrypted drives that are locked. sys/cam/scsi/scsi_all.c: In the asc_table, if we get a 0x20,0x02 error ("Access denied - no access rights"), don't bother retrying. Instead, immediately fail the command. This is the error returned by Self Encrypting Drives (SED) when they are locked.
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