netdev - Re: [net-next 08/15] i40e: fix panic due to too-early Tx queue enable

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Date:	Fri, 29 Aug 2014 21:08:33 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>, davem@...emloft.net
CC:	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
	Mitch Williams <mitch.a.williams@...el.com>
Subject: Re: [net-next 08/15] i40e: fix panic due to too-early Tx queue enable

Hello.

On 08/29/2014 01:30 PM, Jeff Kirsher wrote:

> From: Jesse Brandeburg <jesse.brandeburg@...el.com>

> This fixes the panic under traffic load when resetting.  This issue
> could also show up if/whenever there is a Tx-timeout.

> Change-ID: Ie393a1f17fd5d962e56fc3bfe784899ef25402f5
> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
> Signed-off-by: Mitch Williams <mitch.a.williams@...el.com>
> Tested-by: Jim Young <jamesx.m.young@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> ---
>   drivers/net/ethernet/intel/i40e/i40e_main.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
> index 64b8683..d37dea1 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -5289,7 +5289,7 @@ static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
>    **/
>   static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
>   {
> -	if (!vsi)
> +	if (!vsi || (test_bit(__I40E_DOWN, &vsi->state)))

    Enclosing function call into parens is totally pointless.

WBR, Sergei

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