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From: Fabien Thomas <fabien.thomas@netasq.com>
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Date: Mon, 14 Feb 2011 17:04:07 +0100
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To: Jack F Vogel <jfv@freebsd.org>
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
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Subject: Re: svn commit: r218583 - head/sys/dev/e1000
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> 
> 
> @@ -1937,6 +1937,10 @@ igb_local_timer(void *arg)
> 			goto timeout;
> out:
> 	callout_reset(&adapter->timer, hz, igb_local_timer, adapter);
> +#ifndef DEVICE_POLLING
> +	/* Fire off all queue interrupts - deadlock protection */
> +	E1000_WRITE_REG(&adapter->hw, E1000_EICS, adapter->que_mask);
> +#endif
> 	return;

It seems this one need a check on the polling runtime interface flag?

Fabien