Well, I have a new culprit of the hour:
gregkh-pci-pci-use-pci_bios-as-last-fallback
There was a previous patch that messed up a few of my machines and this
same driver a few months ago, which accounts for my sense of deja vu:
http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.16-rc6/2.6.16-rc6-mm1/broken-out/gregkh-pci-pci-give-pci-config-access-initialization-a-defined-ordering.patch
There was an off-list thread called
"PCI device issue in 2.6.16-rc3-mm1 through 2.6.16-rc6-mm1"
Anyway, here's the information from the syslog at boot in a working
system (without the patch applied):
PCI: PCI BIOS revision 2.10 entry at 0xfd32c, last bus=8
Setting up standard PCI resources
SCSI subsystem initialized
PCI: Probing PCI hardware
PCI: Discovered peer bus 02
PCI: Firmware left 0000:02:05.0 e100 interrupts enabled, disabling
PCI: Discovered peer bus 05
PCI->APIC IRQ transform: 0000:00:05.0[A] -> IRQ 16
PCI->APIC IRQ transform: 0000:00:0f.2[A] -> IRQ 19
PCI->APIC IRQ transform: 0000:02:01.0[A] -> IRQ 17
PCI->APIC IRQ transform: 0000:02:01.1[B] -> IRQ 18
PCI->APIC IRQ transform: 0000:02:05.0[A] -> IRQ 24
PCI->APIC IRQ transform: 0000:05:02.0[A] -> IRQ 21
PCI->APIC IRQ transform: 0000:05:02.1[B] -> IRQ 26
PCI->APIC IRQ transform: 0000:06:04.0[A] -> IRQ 22
PCI->APIC IRQ transform: 0000:06:05.0[A] -> IRQ 27
PCI->APIC IRQ transform: 0000:06:06.0[A] -> IRQ 28
PCI->APIC IRQ transform: 0000:06:07.0[A] -> IRQ 29
PCI: Bridge: 0000:05:03.0
IO window: 7000-7fff
MEM window: eb000000-ec1fffff
PREFETCH window: ea300000-ea3fffff
And the same thing in a system where it can't find my SCSI card (with
the patch applied):
PCI: Using configuration type 1
Setting up standard PCI resources
SCSI subsystem initialized
PCI: Probing PCI hardware
PCI->APIC IRQ transform: 0000:00:05.0[A] -> IRQ 16
PCI->APIC IRQ transform: 0000:00:0f.2[A] -> IRQ 19
-- Dave
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