netdev - Re: [PATCH] e1000: Don't enable polling in open() (was: e1000: assertion hit in e1000

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Date:	Mon, 21 May 2007 17:04:53 -0700
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	Jeff Garzik <jeff@...zik.org>
CC:	stable@...nel.org, Greg KH <greg@...ah.com>,
	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
	davej@...hat.com, herbert@...dor.apana.org.au
Subject: Re: [PATCH] e1000: Don't enable polling in open() (was: e1000: assertion
 hit in e1000_clean(), kernel 2.6.21.1)

Jeff Garzik wrote:
> Auke Kok wrote:
>> Herbert Xu wrote:
>> "netif_poll_enable can only be called if you've previously called
>> netif_poll_disable.  Otherwise a poll might already be in action
>> and you may get a crash like this."
>>
>> Removing the call to netif_poll_enable in e1000_open should fix this issue,
>> the only other call to netif_poll_enable is in e1000_up() which is only
>> reached after a device reset or resume.
>>
>> Bugzilla: http://bugzilla.kernel.org/show_bug.cgi?id=8455
>> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=240339
>>
>> Tested by Doug Chapman <doug.chapman@...com>
>>
>> Signed-off-by: Auke Kok <auke-jan.h.kok@...el.com>
>> Acked-by: Herbert Xu <herbert@...dor.apana.org.au>
>> ---
>>
>>  drivers/net/e1000/e1000_main.c |    4 ----
>>  1 files changed, 0 insertions(+), 4 deletions(-)
> 
> applied, though as a poster (DaveJ?) noted, I'm not sure it completely 
> fixes the bug

It fixes the HP IA64 issue reported by Doug Chapman, but indeed does not even 
apply to the FC bugzilla. I was mistaken due to the fact that I sent the code 
that introduced the bug a while ago, but it's not in 2.6.21 (it was in the 
e1000-fixes tree you had and merged after 2.6.21).

So, this patch doesn't apply for -stable.


Auke
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