From mboxrd@z Thu Jan 1 00:00:00 1970 From: SF Markus Elfring Subject: [PATCH] net: ep93xx_eth: Delete unnecessary checks before the function call "kfree" Date: Wed, 04 Feb 2015 16:00:37 +0100 Message-ID: <54D23415.6070005@users.sourceforge.net> References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.so urceforge.net> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: LKML , kernel-janitors@vger.kernel.org, Julia Lawall To: Hartley Sweeten , netdev@vger.kernel.org Return-path: In-Reply-To: <5317A59D.4@users.sourceforge.net> Sender: kernel-janitors-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Markus Elfring Date: Wed, 4 Feb 2015 15:56:58 +0100 The kfree() 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 --- drivers/net/ethernet/cirrus/ep93xx_eth.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/cirrus/ep93xx_eth.c b/drivers/net/ethernet/cirrus/ep93xx_eth.c index 3a12c09..de9f7c9 100644 --- a/drivers/net/ethernet/cirrus/ep93xx_eth.c +++ b/drivers/net/ethernet/cirrus/ep93xx_eth.c @@ -475,8 +475,7 @@ static void ep93xx_free_buffers(struct ep93xx_priv *ep) if (d) dma_unmap_single(dev, d, PKT_BUF_SIZE, DMA_FROM_DEVICE); - if (ep->rx_buf[i] != NULL) - kfree(ep->rx_buf[i]); + kfree(ep->rx_buf[i]); } for (i = 0; i < TX_QUEUE_ENTRIES; i++) { @@ -486,8 +485,7 @@ static void ep93xx_free_buffers(struct ep93xx_priv *ep) if (d) dma_unmap_single(dev, d, PKT_BUF_SIZE, DMA_TO_DEVICE); - if (ep->tx_buf[i] != NULL) - kfree(ep->tx_buf[i]); + kfree(ep->tx_buf[i]); } dma_free_coherent(dev, sizeof(struct ep93xx_descs), ep->descs, -- 2.2.2