linux-kernel - [PATCH] ixp4xx_eth: Delete an unnecessary check before the function call "dma_pool

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Message-ID: <5649BDF5.5040405@users.sourceforge.net>
Date:	Mon, 16 Nov 2015 12:28:53 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	netdev@...r.kernel.org, Krzysztof Halasa <khalasa@...p.pl>
Cc:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] ixp4xx_eth: Delete an unnecessary check before the function
 call "dma_pool_destroy"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 16 Nov 2015 12:23:23 +0100

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.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/net/ethernet/xscale/ixp4xx_eth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/xscale/ixp4xx_eth.c b/drivers/net/ethernet/xscale/ixp4xx_eth.c
index 5138407..6705951 100644
--- 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;
 	}
-- 
2.6.2

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