Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751338AbdLaL7u (ORCPT ); Sun, 31 Dec 2017 06:59:50 -0500 Received: from mail-lf0-f68.google.com ([209.85.215.68]:34139 "EHLO mail-lf0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751219AbdLaL65 (ORCPT ); Sun, 31 Dec 2017 06:58:57 -0500 X-Google-Smtp-Source: ACJfBouN5s5A5VwUFxumBWQbquurB+WyQ+7nIEA0qBZA1ptQoDwxrAn4/E25EnMFxbd6+FXAd6Ekgw== From: Marcin Wojtas To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, linux-acpi@vger.kernel.org Cc: graeme.gregory@linaro.org, davem@davemloft.net, linux@armlinux.org.uk, rafael.j.wysocki@intel.com, andrew@lunn.ch, f.fainelli@gmail.com, antoine.tenart@free-electrons.com, thomas.petazzoni@free-electrons.com, gregory.clement@free-electrons.com, ezequiel.garcia@free-electrons.com, nadavh@marvell.com, neta@marvell.com, ard.biesheuvel@linaro.org, mw@semihalf.com, jaz@semihalf.com, tn@semihalf.com Subject: [net-next: PATCH v2 3/5] net: mvpp2: simplify maintaining enabled ports' list Date: Sun, 31 Dec 2017 12:58:38 +0100 Message-Id: <1514721520-18964-4-git-send-email-mw@semihalf.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514721520-18964-1-git-send-email-mw@semihalf.com> References: <1514721520-18964-1-git-send-email-mw@semihalf.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2710 Lines: 85 'port_count' field of the mvpp2 structure holds an overall amount of available ports, based on DT nodes status. In order to be prepared to support other HW description, obtain the value by incrementing it upon each successful port initialization. This allowed for simplifying port indexing in the controller's private array, whose size is now not dynamically allocated, but fixed to MVPP2_MAX_PORTS. This patch simplifies creating and filling list of enabled ports and is a part of the preparation for adding ACPI support in the mvpp2 driver. Signed-off-by: Marcin Wojtas --- drivers/net/ethernet/marvell/mvpp2.c | 32 +++++++------------- 1 file changed, 11 insertions(+), 21 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c index a197607..7f42d90 100644 --- a/drivers/net/ethernet/marvell/mvpp2.c +++ b/drivers/net/ethernet/marvell/mvpp2.c @@ -865,7 +865,7 @@ struct mvpp2 { /* List of pointers to port structures */ int port_count; - struct mvpp2_port **port_list; + struct mvpp2_port *port_list[MVPP2_MAX_PORTS]; /* Aggregated TXQs */ struct mvpp2_tx_queue *aggr_txqs; @@ -7741,7 +7741,7 @@ static void mvpp2_port_copy_mac_addr(struct net_device *dev, struct mvpp2 *priv, /* Ports initialization */ static int mvpp2_port_probe(struct platform_device *pdev, struct device_node *port_node, - struct mvpp2 *priv, int index) + struct mvpp2 *priv) { struct device_node *phy_node; struct phy *comphy; @@ -7934,7 +7934,8 @@ static int mvpp2_port_probe(struct platform_device *pdev, } netdev_info(dev, "Using %s mac address %pM\n", mac_from, dev->dev_addr); - priv->port_list[index] = port; + priv->port_list[priv->port_count++] = port; + return 0; err_free_port_pcpu: @@ -8313,28 +8314,17 @@ static int mvpp2_probe(struct platform_device *pdev) goto err_mg_clk; } - priv->port_count = of_get_available_child_count(dn); - if (priv->port_count == 0) { - dev_err(&pdev->dev, "no ports enabled\n"); - err = -ENODEV; - goto err_mg_clk; - } - - priv->port_list = devm_kcalloc(&pdev->dev, priv->port_count, - sizeof(*priv->port_list), - GFP_KERNEL); - if (!priv->port_list) { - err = -ENOMEM; - goto err_mg_clk; - } - /* Initialize ports */ - i = 0; for_each_available_child_of_node(dn, port_node) { - err = mvpp2_port_probe(pdev, port_node, priv, i); + err = mvpp2_port_probe(pdev, port_node, priv); if (err < 0) goto err_port_probe; - i++; + } + + if (priv->port_count == 0) { + dev_err(&pdev->dev, "no ports enabled\n"); + err = -ENODEV; + goto err_mg_clk; } /* Statistics must be gathered regularly because some of them (like -- 2.7.4