[PATCH] Fix weird PCI bus numbers with pci_linkX

[Nate Lawson]

John Baldwin wrote:
> I think I figured out why some people get messages like:
> 
> pci_linkX: BIOS IRQ 11 for -17777216.6.INTA is invalid
> 
> I was not reading the bus number from the bridge device correctly (the normal 
> __BUS_ACCESSOR() macros assume that the passed in argument is a child device, 
> but at the time I'm reading the bus there is no child device, so I was 
> passing in the pcib device, the parent of the pcib device probably returned 
> an error, and the bus variable ended up being some random stack garbage).  
> The attached patch (also at URL) should fix it I think.
> 
> http://www.FreeBSD.org/~jhb/patches/acpi_pci_link.patch

Excellent, patch looks good to me except the printf/panic message could 
be improved.

-- 
Nate