netdev - Re: [E1000-devel] REGRESSION: panic on e1000 driver

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Message-ID: <465F47DE.6000606@intel.com>
Date:	Thu, 31 May 2007 15:10:38 -0700
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
CC:	Doug Chapman <doug.chapman@...com>,
	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: Re: [E1000-devel] REGRESSION: panic on e1000 driver

Herbert Xu wrote:
> On Thu, May 31, 2007 at 08:23:24AM -0700, Kok, Auke wrote:
>>> e1000: 0000:01:02.0: e1000_probe: (PCI-X:66MHz:64-bit) 00:15:60:04:d7:f8
>>> e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
>>> e1000: 0000:01:02.1: e1000_probe: (PCI-X:66MHz:64-bit) 00:15:60:04:d7:f9
>>> e1000: eth1: e1000_probe: Intel(R) PRO/1000 Network Connection
>>> e1000: 0000:15:02.0: e1000_probe: (PCI-X:66MHz:64-bit) 00:12:79:9e:b7:c4
>>> e1000: eth2: e1000_probe: Intel(R) PRO/1000 Network Connection
>>> e1000: 0000:15:02.1: e1000_probe: (PCI-X:66MHz:64-bit) 00:12:79:9e:b7:c5
>>> e1000: eth3: e1000_probe: Intel(R) PRO/1000 Network Connection
>>> e1000: Unexpected interrupt icr=0x4
>> that's indeed the link status change we fire manually to trigger the 
>> watchdog run:
>>
>> #define E1000_ICR_LSC           0x00000004 /* Link Status Change */
> 
> This still makes no sense.  The only triggers I can find for this occur
> after e1000_irq_enable.  So unless we've got a problem with memory
> barriers we shouldn't get the above printk.
> 
> Is there another trigger that happens earlier?

none that I know....

Auke
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