netdev - Re: [net 5/6] i40e: better return values

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Date:	Tue, 24 Sep 2013 04:34:46 -0700
From:	Joe Perches <joe@...ches.com>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc:	davem@...emloft.net, Jesse Brandeburg <jesse.brandeburg@...el.com>,
	netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com
Subject: Re: [net 5/6] i40e: better return values

On Tue, 2013-09-24 at 02:45 -0700, Jeff Kirsher wrote:

> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
[]
> @@ -3339,9 +3345,7 @@ static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
>  	/* Traffic class index starts from zero so
>  	 * increment to return the actual count
>  	 */
> -	num_tc++;
> -
> -	return num_tc;
> +	return num_tc++;

Ick.  post_increment problem.

	return ++num_tc;

There's nothing wrong with the original code
unless this is a bugfix which should be documented
better than "better return values".



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