From patchwork Thu Jun 10 07:20:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guangbin Huang X-Patchwork-Id: 12312047 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 398E3C48BD1 for ; Thu, 10 Jun 2021 07:23:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2194E61406 for ; Thu, 10 Jun 2021 07:23:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230371AbhFJHZc (ORCPT ); Thu, 10 Jun 2021 03:25:32 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:5475 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230211AbhFJHZM (ORCPT ); Thu, 10 Jun 2021 03:25:12 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4G0wNm2qnkzZdCy; Thu, 10 Jun 2021 15:20:24 +0800 (CST) Received: from dggemi759-chm.china.huawei.com (10.1.198.145) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Thu, 10 Jun 2021 15:23:15 +0800 Received: from localhost.localdomain (10.67.165.24) by dggemi759-chm.china.huawei.com (10.1.198.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Thu, 10 Jun 2021 15:23:14 +0800 From: Guangbin Huang To: , , , , CC: , , , Subject: [PATCH net-next 4/8] net: ixp4xx_hss: move out assignment in if condition Date: Thu, 10 Jun 2021 15:20:01 +0800 Message-ID: <1623309605-15671-5-git-send-email-huangguangbin2@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1623309605-15671-1-git-send-email-huangguangbin2@huawei.com> References: <1623309605-15671-1-git-send-email-huangguangbin2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggemi759-chm.china.huawei.com (10.1.198.145) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Peng Li Should not use assignment in if condition. Signed-off-by: Peng Li Signed-off-by: Guangbin Huang --- drivers/net/wan/ixp4xx_hss.c | 66 +++++++++++++++++++++++++++++--------------- 1 file changed, 43 insertions(+), 23 deletions(-) diff --git a/drivers/net/wan/ixp4xx_hss.c b/drivers/net/wan/ixp4xx_hss.c index 48bc914..d657bca 100644 --- a/drivers/net/wan/ixp4xx_hss.c +++ b/drivers/net/wan/ixp4xx_hss.c @@ -510,10 +510,12 @@ static int hss_load_firmware(struct port *port) if (port->initialized) return 0; - if (!npe_running(port->npe) && - (err = npe_load_firmware(port->npe, npe_name(port->npe), - port->dev))) - return err; + if (!npe_running(port->npe)) { + err = npe_load_firmware(port->npe, npe_name(port->npe), + port->dev); + if (err) + return err; + } /* HDLC mode configuration */ memset(&msg, 0, sizeof(msg)); @@ -579,7 +581,8 @@ static inline int queue_get_desc(unsigned int queue, struct port *port, u32 phys, tab_phys, n_desc; struct desc *tab; - if (!(phys = qmgr_get_entry(queue))) + phys = qmgr_get_entry(queue); + if (!phys) return -1; BUG_ON(phys & 0x1F); @@ -664,7 +667,8 @@ static int hss_hdlc_poll(struct napi_struct *napi, int budget) u32 phys; #endif - if ((n = queue_get_desc(rxq, port, 0)) < 0) { + n = queue_get_desc(rxq, port, 0); + if (n < 0) { #if DEBUG_RX printk(KERN_DEBUG "%s: hss_hdlc_poll" " napi_complete\n", dev->name); @@ -699,7 +703,8 @@ static int hss_hdlc_poll(struct napi_struct *napi, int budget) switch (desc->status) { case 0: #ifdef __ARMEB__ - if ((skb = netdev_alloc_skb(dev, RX_SIZE)) != NULL) { + skb = netdev_alloc_skb(dev, RX_SIZE); + if (skb) { phys = dma_map_single(&dev->dev, skb->data, RX_SIZE, DMA_FROM_DEVICE); @@ -847,7 +852,8 @@ static int hss_hdlc_xmit(struct sk_buff *skb, struct net_device *dev) #else offset = (int)skb->data & 3; /* keep 32-bit alignment */ bytes = ALIGN(offset + len, 4); - if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { + mem = kmalloc(bytes, GFP_ATOMIC); + if (!mem) { dev_kfree_skb(skb); dev->stats.tx_dropped++; return NETDEV_TX_OK; @@ -966,8 +972,9 @@ static int init_hdlc_queues(struct port *port) return -ENOMEM; } - if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, - &port->desc_tab_phys))) + port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, + &port->desc_tab_phys); + if (!port->desc_tab) return -ENOMEM; memset(port->desc_tab, 0, POOL_ALLOC_SIZE); memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ @@ -979,11 +986,13 @@ static int init_hdlc_queues(struct port *port) buffer_t *buff; void *data; #ifdef __ARMEB__ - if (!(buff = netdev_alloc_skb(port->netdev, RX_SIZE))) + buff = netdev_alloc_skb(port->netdev, RX_SIZE); + if (!buff) return -ENOMEM; data = buff->data; #else - if (!(buff = kmalloc(RX_SIZE, GFP_KERNEL))) + buff = kmalloc(RX_SIZE, GFP_KERNEL); + if (!buff) return -ENOMEM; data = buff; #endif @@ -1041,23 +1050,29 @@ static int hss_hdlc_open(struct net_device *dev) unsigned long flags; int i, err = 0; - if ((err = hdlc_open(dev))) + err = hdlc_open(dev); + if (err) return err; - if ((err = hss_load_firmware(port))) + err = hss_load_firmware(port); + if (err) goto err_hdlc_close; - if ((err = request_hdlc_queues(port))) + err = request_hdlc_queues(port); + if (err) goto err_hdlc_close; - if ((err = init_hdlc_queues(port))) + err = init_hdlc_queues(port); + if (err) goto err_destroy_queues; spin_lock_irqsave(&npe_lock, flags); - if (port->plat->open) - if ((err = port->plat->open(port->id, dev, - hss_hdlc_set_carrier))) + if (port->plat->open) { + err = port->plat->open(port->id, dev, hss_hdlc_set_carrier); + if (err) goto err_unlock; + } + spin_unlock_irqrestore(&npe_lock, flags); /* Populate queues with buffers, no failure after this point */ @@ -1328,15 +1343,19 @@ static int hss_init_one(struct platform_device *pdev) hdlc_device *hdlc; int err; - if ((port = kzalloc(sizeof(*port), GFP_KERNEL)) == NULL) + port = kzalloc(sizeof(*port), GFP_KERNEL); + if (!port) return -ENOMEM; - if ((port->npe = npe_request(0)) == NULL) { + port->npe = npe_request(0); + if (!port->npe) { err = -ENODEV; goto err_free; } - if ((port->netdev = dev = alloc_hdlcdev(port)) == NULL) { + dev = alloc_hdlcdev(port); + port->netdev = alloc_hdlcdev(port); + if (!port->netdev) { err = -ENOMEM; goto err_plat; } @@ -1355,7 +1374,8 @@ static int hss_init_one(struct platform_device *pdev) port->plat = pdev->dev.platform_data; netif_napi_add(dev, &port->napi, hss_hdlc_poll, NAPI_WEIGHT); - if ((err = register_hdlc_device(dev))) + err = register_hdlc_device(dev); + if (err) goto err_free_netdev; platform_set_drvdata(pdev, port);