Re: [E1000-devel] pci probe of 82574 fails

[akepner <ak...@ri...>]

On Fri, Jan 25, 2013 at 08:25:17PM +0000, Ronciak, John wrote:
> This could be BIOS configuration as well.  Check the BIOS version as Tushar says but also look at how you have the device/slot configured in the BIOS.
> 

The "probe of 0000:07:00.0 failed with error -2" is seen 
with only a few systems. All of the systems I've checked 
(working, and non-working) are using the same BIOS version, 
configured identically, and have hardware of the same type.  

I instrumented the e1000e driver a bit and verified that 
e1000_get_hw_semaphore_82574() call is where the error 
is coming from. 

We have some evidence that power cycling the system may 
cause the bug to go away, but it's hard to be very confident 
of that, since we've seen the bug so few times. 

-- 
Arthur