2.2.15-pre9 IDE IRQ problem

From: Andrew Morton (andrewm@uow.edu.au)
Date: Sat Apr 01 2000 - 03:45:08 EST

Kernel 2.2.15-pre9 on a dual processor BP6. HPT366 controller, latest
BIOS, UDMA drives on the second IDE controller (hde, hdf). CDROM on the
primary (hda).

When the kernel is built for SMP it comes up with "ide2: Disabled unable
to get IRQ -11". No root fs.

The same kernel works fine when built for UP. 2.3.99 works OK both UP
and SMP.

Under 2.2.15-UP /proc/interrupts says:

           CPU0
  0: 10611 XT-PIC timer
  1: 68 XT-PIC keyboard
  2: 0 XT-PIC cascade
 10: 85 XT-PIC eth0
 11: 14291 XT-PIC ide2
 12: 0 XT-PIC PS/2 Mouse
 13: 1 XT-PIC fpu
 14: 7 XT-PIC ide0
NMI: 0

Under 2.3.99-pre4-SMP, /proc/interrupts says:

           CPU0 CPU1
  0: 1833 1651 IO-APIC-edge timer
  1: 2 3 IO-APIC-edge keyboard
  2: 0 0 XT-PIC cascade
 12: 0 0 IO-APIC-edge PS/2 Mouse
 13: 1 0 XT-PIC fpu
 14: 7 0 IO-APIC-edge ide0
 18: 841 857 IO-APIC-level ide2
 19: 37 39 IO-APIC-level eth0
NMI: 3386 3386
LOC: 3396 3395
ERR: 0

I can provide more details, try patches or run additional test cases on
request. 

-- 
-akpm-

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