netdev - Re: [net] i40e/i40evf: check for stopped admin queue

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Date:	Mon, 28 Sep 2015 20:58:19 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	mitch.a.williams@...el.com, netdev@...r.kernel.org,
	nhorman@...hat.com, sassmann@...hat.com, jogreene@...hat.com
Subject: Re: [net] i40e/i40evf: check for stopped admin queue

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Mon, 28 Sep 2015 17:31:26 -0700

> From: Mitch Williams <mitch.a.williams@...el.com>
> 
> It's possible that while we are waiting for the spinlock, another
> entity (that owns the spinlock) has shut down the admin queue.
> If we then attempt to use the queue, we will panic.
> 
> Add a check for this condition on the receive side. This matches
> an existing check on the send queue side.
> 
> Signed-off-by: Mitch Williams <mitch.a.williams@...el.com>
> Acked-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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