[BUG] Fusion MPT 2.6.8 driver and multi LUN device

[Manu <nobody@guzu.net>]

Under a fresh Mandrake 10.1 with a 2.6.8 kernel, the Fusion MPT driver 
do recognize the HP tape autoloader. The autoloader is composed of tape 
drive (on LUN 0) and the changer (on LUN 1).
The message comes from scsi_scan.c :
     printk(KERN_WARNING "scsi: %s lun%d has a LUN larger"
	       " than allowed by the host adapter\n",
	       devname, lun);

Playing a bit with printk it looks like the num_luns is well computed 
(the value is 2), but the 2 LUN values seems to be miss-aligned.
When displaying the 8 bytes raw buffer (through lunp) in the loop :
  00 00 00 00 00 00 00 00
  00 00 01 00 00 00 00 00

I think the second buffer should be :
  00 01 00 00 00 00 00 00

Which, when computed, gives 1 instead of 16777216 (0x1000000).

The autoloader works like a charm under the 2.4.27 kernel provided with 
the Mandrake 10.1.

- Emmanuel Varagnat

PS: the 2 harddrives in RAID1 are well working, even with the 2.6.8 kernel.