boot hang without xhci

[Hans Petter Selasky]

On Friday 22 July 2011 01:38:33 Mike Tancsa wrote:
> More for the archives in case anyone else runs into this.
> 
> We got a new desktop board in that we were testing out netbooting and
> noticed that without xhci loaded in the kernel the box hangs with the
> last thing being initialized em0 (full dmesg etc at
> http://www.tancsa.com/xhci.txt)
> 
> Its an Intel DQ67SW
> 
> 
> ata2: [ITHREAD]
> ata3: <ATA channel 1> on atapci0
> ata3: [ITHREAD]
> pci0: <simple comms, UART> at device 22.3 (no driver attached)
> em0: <Intel(R) PRO/1000 Network Connection 7.2.3> port 0xf080-0xf09f mem
> 0xfe600000-0xfe61ffff,0xfe628000-0xfe628fff irq 20 at device 25.0 on pci0
> em0: Using an MSI interrupt
> em0: [FILTER]
> em0: Ethernet address: 00:22:4d:52:04:46
> 
> with usb 3 disabled in the BIOS, or with xhci loaded, all boots fine as
> shown below.

Please try the attached patch for /sys/dev/pci:

--HPS
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