2.6.0-test2: irq 18: nobody cared...Disabling irq #18 (i875P SATA)

From: Jurgen Kramer (gtm.kramer@inter.nl.net)
Date: Fri Aug 01 2003 - 09:10:24 EST


Hi,

While booting 2.6.0-test2 on my i875P based PC I get the following:

<snip>
Adding 787176k swap on /dev/hda3. Priority:-1 extents:1
irq 18: nobody cared!
Call Trace:
 [<c010cf76>] __report_bad_irq+0x2a/0x8b
 [<c010d060>] note_interrupt+0x6f/0x9f
 [<c010d38d>] do_IRQ+0x175/0x1a6
 [<c010884e>] default_idle+0x0/0x2d
 [<c010884e>] default_idle+0x0/0x2d
 [<c010b5c4>] common_interrupt+0x18/0x20
 [<c010884e>] default_idle+0x0/0x2d
 [<c010884e>] default_idle+0x0/0x2d
 [<c0108878>] default_idle+0x2a/0x2d
 [<c01088ee>] cpu_idle+0x39/0x42
 [<c0105000>] rest_init+0x0/0x65
 [<c035a83e>] start_kernel+0x191/0x1ca
 [<c035a403>] unknown_bootoption+0x0/0xff

handlers:
[<c01ef51c>] (ide_intr+0x0/0x1d4)
Disabling IRQ #18

IRQ 18 belongs to the SATA interface:

ide2 at 0xefe0-0xefe7,0xefae on irq 18

Funny thing is that the SATA drive is still usable while the irq
is disabled.

I also noticed that the interrupt count for IRQ 18 is still rather high
(as I mention in a previous mail):

           CPU0 CPU1
  0: 552358 0 IO-APIC-edge timer
  2: 0 0 XT-PIC cascade
  9: 0 0 IO-APIC-level acpi
 14: 11122 0 IO-APIC-edge ide0
 15: 1 0 IO-APIC-edge ide1
 16: 42146 0 IO-APIC-level uhci-hcd, nvidia
 17: 0 0 IO-APIC-level Intel ICH5
 18: 100013 99992 IO-APIC-level ide2
 19: 14627 0 IO-APIC-level uhci-hcd
 20: 2 0 IO-APIC-level ohci1394
 21: 530 0 IO-APIC-level eth0
 23: 0 0 IO-APIC-level ehci_hcd
NMI: 0 0
LOC: 552289 552628
ERR: 0
MIS: 4

Any solutions?

Cheers,

Jurgen

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