Hi, I'm with linux-2.6.5, i have re-compiled the kernel, to get suport to another scsi controler in my workstation. Attached it's the all dmesg file, and here it's the debug output that the kernel show's me! i dont know who have changed the kernel to have new DMA suporte, if someone know's say me please, so i can mail him directly. scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36 aic7860: Ultra Single Channel A, SCSI Id=7, 3/253 SCBs (scsi0:A:0): 20.000MB/s transfers (20.000MHz, offset 8) Vendor: PIONEER Model: DVD-ROM DVD-303F Rev: 2.00 Type: CD-ROM ANSI SCSI revision: 02 PCI: Enabling device 0000:01:09.0 (0006 -> 0007) PCI: Unable to reserve mem region #2:1000@e3001000 for device 0000:01:09.0 aic7xxx: at PCI 1/9/0 aic7xxx: I/O ports already in use, ignoring. i91u: PCI Base=0xC000, IRQ=11, BIOS=0xFF000, SCSI ID=2 i91u: Reset SCSI Bus ... ERROR: SCSI host `INI9100U' has no error handling ERROR: This is not a safe way to run your SCSI host ERROR: The error handling must be added to this driver Call Trace: [] scsi_host_alloc+0x2ac/0x2c0 [] init_tulip+0x2b3/0x2d0 [] scsi_register+0x1e/0x70 [] i91u_detect+0x1b5/0x2c0 [] init_this_scsi_driver+0x40/0x100 [] do_initcalls+0x2c/0xc0 [] init_workqueues+0x12/0x60 [] init+0x2f/0x120 [] init+0x0/0x120 [] kernel_thread_helper+0x5/0x14 scsi1 : Initio INI-9X00U/UW SCSI device driver; Revision: 1.03g Vendor: YAMAHA Model: CRW8424S Rev: 1.0j Type: CD-ROM ANSI SCSI revision: 02 sr0: scsi3-mmc drive: 0x/0x cd/rw xa/form2 cdda tray Uniform CD-ROM driver Revision: 3.20 Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0 sr1: scsi3-mmc drive: 24x/16x writer cd/rw xa/form2 cdda tray Attached scsi CD-ROM sr1 at scsi1, channel 0, id 1, lun 0 Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 5 Attached scsi generic sg1 at scsi1, channel 0, id 1, lun 0, type 5 Tks