lpfc driver loading is rebooting the box: 2.6.33 and above.

[Keith Mannthey <kmannth@us.ibm.com>]

I moved forwarded and a server started rebooting while loading the
kernel current kernels. 

I isolated it to the lpfc driver. 

Upsteam kernels tried so far:

3.6.34-rc1
3.4.33-git15 

With these kernels I see the following when the driver loads: 

"
[ 276.643991] Emulex LightPulse Fibre Channel SCSI driver 8.3.9
[ 276.643996] Copyright(c) 2004-2009 Emulex. All rights reserved.
[ 276.644058] lpfc 0000:1a:00.0: PCI INT A -> GSI 30 (level, low) -> IRQ 30
[ 276.644067] lpfc 0000:1a:00.0: setting latency timer to 64
[ 276.645003] scsi5 : on PCI bus 1a device 00 irq 30
[ 277.480150] lpfc 0000:1a:00.0: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 278.167137] lpfc 0000:1a:00.0: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 278.167171] alloc irq_desc for 72 on node -1
[ 278.167174] alloc kstat_irqs on node -1
[ 278.167181] alloc irq_2_iommu on node -1
[ 278.167195] lpfc 0000:1a:00.0: irq 72 for MSI/MSI-X
[ 278.857352] lpfc 0000:1a:00.0: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 279.547573] lpfc 0000:1a:00.0: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 280.237779] lpfc 0000:1a:00.0: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 280.927994] lpfc 0000:1a:00.0: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 280.927999] lpfc 0000:1a:00.0: 0:1477 Failed to set up hba
[ 281.028380] lpfc 0000:1a:00.0: PCI INT A disabled
[ 281.028411] alloc irq_desc for 37 on node -1
[ 281.028412] alloc kstat_irqs on node -1
[ 281.028416] alloc irq_2_iommu on node -1
[ 281.028422] lpfc 0000:1a:00.1: PCI INT B -> GSI 37 (level, low) -> IRQ 37
[ 281.028427] lpfc 0000:1a:00.1: setting latency timer to 64
[ 281.028939] scsi6 : on PCI bus 1a device 01 irq 37
[ 281.717949] lpfc 0000:1a:00.1: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 282.408169] lpfc 0000:1a:00.1: 0:0440 Adapter failed to init, READ_REV has missing revision information.
[ 282.408210] lpfc 0000:1a:00.1: irq 72 for MSI/MSI-X
[ 283.098375] lpfc 0000:1a:00.1: 0:0440 Adapter failed to inelm
 "

A little while (less then 30 seconds) after loading the driver (rmmod
sometimes extends the life of the box). I get a hardware level pci fault
and my box reboots. 

My FW has been constant during this at 282a4 (current I believe) and
lspci reports the card as

1a:00.0 Fibre Channel: Emulex Corporation Zephyr-X LightPulse Fibre Channel Host Adapter (rev 02)
1a:00.1 Fibre Channel: Emulex Corporation Zephyr-X LightPulse Fibre Channel Host Adapter (rev 02)

The system is a 2 socket Intel based server IBM x3550m2.  


I forwarded ported some of the older versions of the driver 8.3.7 and
8.3.6 and that didn't not fix the issue, I am not convinced it is a
direct driver change that is causing this.  I also tried "lpfc_use_msi"
and "lpfc_sli_mode" modules options without any affect on behavior. 

Then I started testing whole kernels, .config file remained as close as
possible. After some boots it seem 2.6.33-rc8 and before works. It is a
relatively small window of change and I am still digging but I thought I
would post and see if there were any ideas or suggestions out there. 

Anyone seen anything like this?  

Thanks,
  Keith Mannthey
  LTC FS-Dev 



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