From mboxrd@z Thu Jan  1 00:00:00 1970
From: khalasa@piap.pl (Krzysztof =?utf-8?Q?Ha=C5=82asa?=)
Subject: Re: [PATCH] ixp4xx_eth: Delete an unnecessary check before the function call "dma_pool_destroy"
Date: Wed, 25 Nov 2015 13:19:12 +0100
Message-ID: <m3poyyz2yn.fsf@t19.piap.pl>
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Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org,
	Julia Lawall <julia.lawall@lip6.fr>
To: SF Markus Elfring <elfring@users.sourceforge.net>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <5649BDF5.5040405@users.sourceforge.net> (SF Markus Elfring's
	message of "Mon, 16 Nov 2015 12:28:53 +0100")
Sender: linux-kernel-owner@vger.kernel.org
List-Id: netdev.vger.kernel.org

SF Markus Elfring <elfring@users.sourceforge.net> writes:

> The dma_pool_destroy() function tests whether its argument is NULL
> and then returns immediately. Thus the test around the call is not needed.
>
> This issue was detected by using the Coccinelle software.

> --- a/drivers/net/ethernet/xscale/ixp4xx_eth.c
> +++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c
> @@ -1192,7 +1192,7 @@ static void destroy_queues(struct port *port)
>  		port->desc_tab = NULL;
>  	}
>  
> -	if (!ports_open && dma_pool) {
> +	if (!ports_open) {
>  		dma_pool_destroy(dma_pool);
>  		dma_pool = NULL;
>  	}

Acked-by: Krzysztof Halasa <khalasa@piap.pl>
-- 
Krzysztof Halasa

Industrial Research Institute for Automation and Measurements PIAP
Al. Jerozolimskie 202, 02-486 Warsaw, Poland