2.5.52: PDC20268 failure

the 2.5 series of kernels (since early ide changes) fails on my machine when configuring the harddisks.

machine is a dual P-II 300 MHz, Intel BX chipset
two Promise UltraTx2 boards, PDC20268, with an IBM disk connected to every channel.

kernel 2.4.18 is still running ok for me. When running a 2.5.x kernel on this same box, the cards seem te be assigned different interrupts (weird, since the cards remain in the same slots etc.)

2.4.18: (works fine)
ide2 at 0xa800-0xa807,0xac02 on irq 17
ide3 at 0xb000-0xb007,0xb402 on irq 17
ide4 at 0xbc00-0xbc07,0xc002 on irq 18
ide5 at 0xc400-0xc407,0xc802 on irq 18

2.5.52: (lost interrupts)
ide2 at 0xa800-0xa807,0xac02 on irq 16
ide3 at 0xb000-0xb007,0xb402 on irq 16
ide4 at 0xbc00-0xbc07,0xc002 on irq 16
ide5 at 0xc400-0xc407,0xc802 on irq 16

Regards,
Frank.

+---- --- -- -  -   -    - 
| Frank van de Pol                  -o)    A-L-S-A
| [email protected]                    /\\  Sounds good!
| http://www.alsa-project.org      _\_v
| Linux - Why use Windows if we have doors available?

Can you tell me if 2.4.21-pre does - that has the IDE changes without the other stuff so is a good test of which bit is involved

Also try 2.5.52 with ACPI disabled

Good thinking Alan! it seems ACPI is causing the trouble.

2.4.18 - OK
2.4.19 - OK
2.4.20 - OK
2.4.21-pre2 OK (using pdc202xx_new driver)

2.5.52 with ACPI - Failure, IRQ troubles wrong IRQ assigned for promise
boards, lockup of box during boot
2.5.52 no ACPI - OK !!!

What information do I need to provide to fix this problem?

Frank.

+---- --- -- -  -   -    - 
| Frank van de Pol                  -o)    A-L-S-A
| [email protected]                    /\\  Sounds good!
| http://www.alsa-project.org      _\_v
| Linux - Why use Windows if we have doors available?