netdev - Re: e1000e: 1 second spins in e1000_acquire_swflag

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Message-ID: <20130527004851.GA3065@lintop>
Date:	Sun, 26 May 2013 19:48:52 -0500
From:	Shawn Bohrer <shawn.bohrer@...il.com>
To:	e1000-devel@...ts.sourceforge.net
Cc:	netdev@...r.kernel.org
Subject: Re: e1000e: 1 second spins in e1000_acquire_swflag_ich8lan?

On Sun, May 26, 2013 at 11:46:34AM -0500, Shawn Bohrer wrote:
> I guess I have two questions:  
> 
> 1) Do these need to be mdelays instead of msleeps?  It looks like in
> my case this is called from process context, but I didn't audit all of
> the callers of this function and maybe it can happen from interrupt
> context too?
> 
> 2) Any idea why I'm hitting this in the first place?

Well, as is probably expected doing a cold boot of the system fixed
the issue (a warm reboot did not), so I'm guessing the hardware was
simply in a bad state.  It seems a bit excessive to me that this code
can spin in the kernel for up to a second, and it appears on my system
it was doing this every two seconds.

--
Shawn
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