netdev - Re: [net-next 2/2] i40e: Check and set the PF driver state first in i40e_ndo_set_vf

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Date:   Wed, 05 Jun 2019 16:53:50 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     jeffrey.t.kirsher@...el.com
Cc:     lihong.yang@...el.com, netdev@...r.kernel.org, nhorman@...hat.com,
        sassmann@...hat.com
Subject: Re: [net-next 2/2] i40e: Check and set the PF driver state first
 in i40e_ndo_set_vf_mac

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Wed,  5 Jun 2019 12:45:16 -0700

> From: Lihong Yang <lihong.yang@...el.com>
> 
> The PF driver state flag __I40E_VIRTCHNL_OP_PENDING needs to be
> checked and set at the beginning of i40e_ndo_set_vf_mac. Otherwise,
> if there are error conditions before it, the flag will be cleared
> unexpectedly by this function to cause potential race conditions.
> Hence move the check to the top of this function.
> 
> Signed-off-by: Lihong Yang <lihong.yang@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.