From patchwork Thu Aug 28 06:57:30 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 4797971 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id EC0FEC0338 for ; Thu, 28 Aug 2014 08:15:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D24F420142 for ; Thu, 28 Aug 2014 08:15:08 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C49D82012E for ; Thu, 28 Aug 2014 08:15:07 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 32958132B; Thu, 28 Aug 2014 07:31:43 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id EE70112ED for ; Thu, 28 Aug 2014 07:31:40 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 60A811F88A for ; Thu, 28 Aug 2014 07:31:40 +0000 (UTC) Received: from ayumi.isobedori.kobe.vergenet.net (p4222-ipbfp1605kobeminato.hyogo.ocn.ne.jp [114.154.95.222]) by kirsty.vergenet.net (Postfix) with ESMTP id 40517267288; Thu, 28 Aug 2014 17:08:12 +1000 (EST) Received: by ayumi.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id C595FEDE8E0; Thu, 28 Aug 2014 16:08:10 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Thu, 28 Aug 2014 15:57:30 +0900 Message-Id: <1409209620-24487-325-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.0.1 In-Reply-To: <1409209620-24487-1-git-send-email-horms+renesas@verge.net.au> References: <1409209620-24487-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH LTSI-3.14 324/894] sh_eth: remove checks around dev_kfree_skb() calls X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sergei Shtylyov Since consume_skb() (and hence dev_kfree_skb() macro) checks the passed pointer for NULL, there's no need to check for NULL before invoking dev_kfree_skb(). Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller (cherry picked from commit 179d80aff82bf8dff9db30589fe5a2297c454d35) Signed-off-by: Simon Horman --- drivers/net/ethernet/renesas/sh_eth.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 10af820..26936b9 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1094,20 +1094,16 @@ static void sh_eth_ring_free(struct net_device *ndev) /* Free Rx skb ringbuffer */ if (mdp->rx_skbuff) { - for (i = 0; i < mdp->num_rx_ring; i++) { - if (mdp->rx_skbuff[i]) - dev_kfree_skb(mdp->rx_skbuff[i]); - } + for (i = 0; i < mdp->num_rx_ring; i++) + dev_kfree_skb(mdp->rx_skbuff[i]); } kfree(mdp->rx_skbuff); mdp->rx_skbuff = NULL; /* Free Tx skb ringbuffer */ if (mdp->tx_skbuff) { - for (i = 0; i < mdp->num_tx_ring; i++) { - if (mdp->tx_skbuff[i]) - dev_kfree_skb(mdp->tx_skbuff[i]); - } + for (i = 0; i < mdp->num_tx_ring; i++) + dev_kfree_skb(mdp->tx_skbuff[i]); } kfree(mdp->tx_skbuff); mdp->tx_skbuff = NULL; @@ -2077,13 +2073,11 @@ static void sh_eth_tx_timeout(struct net_device *ndev) rxdesc = &mdp->rx_ring[i]; rxdesc->status = 0; rxdesc->addr = 0xBADF00D0; - if (mdp->rx_skbuff[i]) - dev_kfree_skb(mdp->rx_skbuff[i]); + dev_kfree_skb(mdp->rx_skbuff[i]); mdp->rx_skbuff[i] = NULL; } for (i = 0; i < mdp->num_tx_ring; i++) { - if (mdp->tx_skbuff[i]) - dev_kfree_skb(mdp->tx_skbuff[i]); + dev_kfree_skb(mdp->tx_skbuff[i]); mdp->tx_skbuff[i] = NULL; }