2.5.25 IDE: PDC20268 interrupt problem

[Frank van de Pol <fvdpol@home.nl>]

Hi folks,

when booting 2.5.25 it seems that every operation to my Promise Ultra100TX2
controller attached disks ends up in having lost interrupts (lost interrupt;
pdc202xx: Primary channel reset etc. etc.). Even the partition table
detection of the disks takes forever (but it does get detected though).

I've 2 of those U100TX2 controllers in my machine. I can't tell where in the
2.5 series this problem was introduced since there was some breakage for the
MD drivers in the late 2.5 series. 2.4 kernels run fine though. 

I noticed that kernel 2.5.25 binds all 4 Promise IDE controllers to IRQ 16,
while 2.4.18 uses a different IRQ for every board. 


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


2.5.25: (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


Any clues?

Frank.

-- 
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| Frank van de Pol                  -o)    A-L-S-A
| FvdPol@home.nl                    /\\  Sounds good!
| http://www.alsa-project.org      _\_v
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