From patchwork Thu Jan 19 16:58:25 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Khoronzhuk X-Patchwork-Id: 9526461 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5806D60113 for ; Thu, 19 Jan 2017 17:09:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 49E4D28628 for ; Thu, 19 Jan 2017 17:09:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3E5BF28634; Thu, 19 Jan 2017 17:09:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D500A28628 for ; Thu, 19 Jan 2017 17:09:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753966AbdASRHv (ORCPT ); Thu, 19 Jan 2017 12:07:51 -0500 Received: from mail-lf0-f46.google.com ([209.85.215.46]:36388 "EHLO mail-lf0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753642AbdASRHd (ORCPT ); Thu, 19 Jan 2017 12:07:33 -0500 Received: by mail-lf0-f46.google.com with SMTP id z134so41336796lff.3 for ; Thu, 19 Jan 2017 09:07:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=UEMUZoV/N4rZrx7tQDP55rHeVaO9UYIK1S//j3l5UJw=; b=W/ip1ILv6kP7YZPAAz179uM5FX0n0Z8lkg99iJbUZI6p4pWkpON2TA4TAxH0CdB/nW 0ZNZybyXfu09+mv48Ta3WjGi1HnPjhepc4fOZvJ+x0MYwE8fgEioSeozCzqJx21Xp1VJ RmWSip2kfgS6Jslg1yLKLG6kw5b26fZgTg6Qc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=UEMUZoV/N4rZrx7tQDP55rHeVaO9UYIK1S//j3l5UJw=; b=b5LsNwyOZbsE2D9RYhT1t5wu8bKweHqwMP9pfhhZrOyovNc1UmGmNS9pDOtqxHd8n8 47SqB58ln+XGibUdwryTJYcooe2s6gKyXH6nH+YQhPooGZcJuzSAugLw5wC9KM+PjH9E QlsUngC/9c4Z4vJNWM1zWRj3pEDYuPAQpa4XMa+9Ryh2Y1LswVVVLc2ZHjqtd4O4XUSm BESi1V8/9mtMWrnLRDT+oZJpNIwSDIUF0dRaCbXFPKYUC1R1vPQdfelhoJJq8PqeQx99 BIu79fH/gfaVE1DjwAULcfSds5FFzusvi4Y/qUZfnk3cLtUekrwiqTntzYACTUfhnbp/ Bx2w== X-Gm-Message-State: AIkVDXLcIeVtm/+9u4NPBVFnX4e3eOG+KNIvGP5rU6DAC8J3ECftZcIl5SdcnZq3rICyoZHy X-Received: by 10.25.29.68 with SMTP id d65mr2907626lfd.112.1484845113962; Thu, 19 Jan 2017 08:58:33 -0800 (PST) Received: from khorivan.synapse.com ([2001:67c:2e5c:2011:b088:28ef:5680:e1cf]) by smtp.gmail.com with ESMTPSA id r27sm2162942ljd.14.2017.01.19.08.58.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 19 Jan 2017 08:58:33 -0800 (PST) From: Ivan Khoronzhuk To: mugunthanvnm@ti.com Cc: grygorii.strashko@ti.com, netdev@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, Ivan Khoronzhuk Subject: [PATCH v2 3/5] net: ethernet: ti: cpsw: don't duplicate ndev_running Date: Thu, 19 Jan 2017 18:58:25 +0200 Message-Id: <1484845107-30331-4-git-send-email-ivan.khoronzhuk@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1484845107-30331-1-git-send-email-ivan.khoronzhuk@linaro.org> References: <1484845107-30331-1-git-send-email-ivan.khoronzhuk@linaro.org> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP No need to create additional vars to identify if interface is running. So simplify code by removing redundant var and checking usage counter instead. Signed-off-by: Ivan Khoronzhuk --- drivers/net/ethernet/ti/cpsw.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index f798905..c681d39 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -357,7 +357,6 @@ struct cpsw_slave { struct phy_device *phy; struct net_device *ndev; u32 port_vlan; - u32 open_stat; }; static inline u32 slave_read(struct cpsw_slave *slave, u32 offset) @@ -1235,13 +1234,13 @@ static void cpsw_get_ethtool_stats(struct net_device *ndev, } } -static int cpsw_common_res_usage_state(struct cpsw_common *cpsw) +static int cpsw_get_usage_count(struct cpsw_common *cpsw) { u32 i; u32 usage_count = 0; for (i = 0; i < cpsw->data.slaves; i++) - if (cpsw->slaves[i].open_stat) + if (netif_running(cpsw->slaves[i].ndev)) usage_count++; return usage_count; @@ -1501,8 +1500,11 @@ static int cpsw_ndo_open(struct net_device *ndev) CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg), CPSW_RTL_VERSION(reg)); - /* initialize host and slave ports */ - if (!cpsw_common_res_usage_state(cpsw)) + /* Initialize host and slave ports. + * Given ndev is marked as opened already, so init port only if 1 ndev + * is opened + */ + if (cpsw_get_usage_count(cpsw) < 2) cpsw_init_host_port(priv); for_each_slave(priv, cpsw_slave_open, priv); @@ -1513,7 +1515,10 @@ static int cpsw_ndo_open(struct net_device *ndev) cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0); - if (!cpsw_common_res_usage_state(cpsw)) { + /* Given ndev is marked as opened already, so if more ndev + * are opened - no need to init shared resources. + */ + if (cpsw_get_usage_count(cpsw) < 2) { /* disable priority elevation */ __raw_writel(0, &cpsw->regs->ptype); @@ -1556,9 +1561,6 @@ static int cpsw_ndo_open(struct net_device *ndev) cpdma_ctlr_start(cpsw->dma); cpsw_intr_enable(cpsw); - if (cpsw->data.dual_emac) - cpsw->slaves[priv->emac_port].open_stat = true; - return 0; err_cleanup: @@ -1578,7 +1580,10 @@ static int cpsw_ndo_stop(struct net_device *ndev) netif_tx_stop_all_queues(priv->ndev); netif_carrier_off(priv->ndev); - if (cpsw_common_res_usage_state(cpsw) <= 1) { + /* Given ndev is marked as close already, + * so disable shared resources if no open devices + */ + if (!cpsw_get_usage_count(cpsw)) { napi_disable(&cpsw->napi_rx); napi_disable(&cpsw->napi_tx); cpts_unregister(cpsw->cpts); @@ -1592,8 +1597,6 @@ static int cpsw_ndo_stop(struct net_device *ndev) cpsw_split_res(ndev); pm_runtime_put_sync(cpsw->dev); - if (cpsw->data.dual_emac) - cpsw->slaves[priv->emac_port].open_stat = false; return 0; } @@ -2418,7 +2421,7 @@ static int cpsw_set_channels(struct net_device *ndev, netif_dormant_off(slave->ndev); } - if (cpsw_common_res_usage_state(cpsw)) { + if (cpsw_get_usage_count(cpsw)) { ret = cpsw_fill_rx_channels(priv); if (ret) goto err; @@ -2537,7 +2540,7 @@ static int cpsw_set_ringparam(struct net_device *ndev, netif_dormant_off(slave->ndev); } - if (cpsw_common_res_usage_state(cpsw)) { + if (cpsw_get_usage_count(cpsw)) { cpdma_chan_split_pool(cpsw->dma); ret = cpsw_fill_rx_channels(priv);