Try this patch some clever guy sent to the list a couple days ago. I had  
the same issue and this patch fixed it.

This is against 2.6.5. Who takes care of merging this scsi driver into the  
mainstream kernel? I couldn't find anyone in the MAINTAINERS file. Thanks.

Mirko

On Sun, 2 May 2004 21:25:48 +0100, backblue <backblue@netcabo.pt> wrote:

> 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
>         <Adaptec 2940A Ultra SCSI adapter>
>         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: <Adaptec AHA-2940A Ultra SCSI host adapter> 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:
>  [<c02ad5bc>] scsi_host_alloc+0x2ac/0x2c0
>  [<c02e8653>] init_tulip+0x2b3/0x2d0
>  [<c02ad5ee>] scsi_register+0x1e/0x70
>  [<c02e7715>] i91u_detect+0x1b5/0x2c0
>  [<c05081a0>] init_this_scsi_driver+0x40/0x100
>  [<c04ee7fc>] do_initcalls+0x2c/0xc0
>  [<c01297b2>] init_workqueues+0x12/0x60
>  [<c01030cf>] init+0x2f/0x120
>  [<c01030a0>] init+0x0/0x120
>  [<c0106d31>] 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