From patchwork Tue Jan 13 19:44:48 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felipe Balbi X-Patchwork-Id: 5623881 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B5E449F358 for ; Tue, 13 Jan 2015 19:45:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A59F820389 for ; Tue, 13 Jan 2015 19:45:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3EED20374 for ; Tue, 13 Jan 2015 19:45:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753241AbbAMTph (ORCPT ); Tue, 13 Jan 2015 14:45:37 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:42715 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751161AbbAMTpg (ORCPT ); Tue, 13 Jan 2015 14:45:36 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id t0DJjYNo002573; Tue, 13 Jan 2015 13:45:34 -0600 Received: from DLEE70.ent.ti.com (dlemailx.itg.ti.com [157.170.170.113]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id t0DJjYQK024392; Tue, 13 Jan 2015 13:45:34 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.174.1; Tue, 13 Jan 2015 13:45:34 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t0DJjXY5008929; Tue, 13 Jan 2015 13:45:34 -0600 From: Felipe Balbi To: CC: Tony Lindgren , Linux OMAP Mailing List , , , Felipe Balbi Subject: [patch-net-next 3/3] net: ethernet: cpsw: don't requests IRQs we don't use Date: Tue, 13 Jan 2015 13:44:48 -0600 Message-ID: <1421178288-7393-3-git-send-email-balbi@ti.com> X-Mailer: git-send-email 2.2.0 In-Reply-To: <1421178288-7393-1-git-send-email-balbi@ti.com> References: <1421178288-7393-1-git-send-email-balbi@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 X-Virus-Scanned: ClamAV using ClamSMTP CPSW never uses RX_THRESHOLD or MISC interrupts. In fact, they are always kept masked in their appropriate IRQ Enable register. Instead of allocating an IRQ that never fires, it's best to remove that code altogether and let future patches implement it if anybody needs those. Signed-off-by: Felipe Balbi --- drivers/net/ethernet/ti/cpsw.c | 55 ++++++++++++------------------------------ 1 file changed, 15 insertions(+), 40 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index c9081bdbbcbc..fd0acd9b41ae 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -754,16 +754,6 @@ requeue: dev_kfree_skb_any(new_skb); } -static irqreturn_t cpsw_dummy_interrupt(int irq, void *dev_id) -{ - struct cpsw_priv *priv = dev_id; - int value = irq - priv->irqs_table[0]; - - cpdma_ctlr_eoi(priv->dma, value); - - return IRQ_HANDLED; -} - static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id) { struct cpsw_priv *priv = dev_id; @@ -1635,8 +1625,8 @@ static void cpsw_ndo_poll_controller(struct net_device *ndev) cpsw_intr_disable(priv); cpdma_ctlr_int_ctrl(priv->dma, false); - cpsw_rx_interrupt(priv->irq[1], priv); - cpsw_tx_interrupt(priv->irq[2], priv); + cpsw_rx_interrupt(priv->irq[0], priv); + cpsw_tx_interrupt(priv->irq[1], priv); cpdma_ctlr_int_ctrl(priv->dma, true); cpsw_intr_enable(priv); } @@ -2358,30 +2348,27 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_dma_ret; } - ndev->irq = platform_get_irq(pdev, 0); + ndev->irq = platform_get_irq(pdev, 1); if (ndev->irq < 0) { dev_err(priv->dev, "error getting irq resource\n"); ret = -ENOENT; goto clean_ale_ret; } - irq = platform_get_irq(pdev, 0); - if (irq < 0) - goto clean_ale_ret; - - priv->irqs_table[0] = irq; - ret = devm_request_irq(&pdev->dev, irq, cpsw_dummy_interrupt, - 0, dev_name(&pdev->dev), priv); - if (ret < 0) { - dev_err(priv->dev, "error attaching irq (%d)\n", ret); - goto clean_ale_ret; - } + /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and + * MISC IRQs which are always kept disabled with this driver so + * we will not request them. + * + * If anyone wants to implement support for those, make sure to + * first request and append them to irqs_table array. + */ + /* RX IRQ */ irq = platform_get_irq(pdev, 1); if (irq < 0) goto clean_ale_ret; - priv->irqs_table[1] = irq; + priv->irqs_table[0] = irq; ret = devm_request_irq(&pdev->dev, irq, cpsw_rx_interrupt, 0, dev_name(&pdev->dev), priv); if (ret < 0) { @@ -2389,31 +2376,19 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_ale_ret; } + /* TX IRQ */ irq = platform_get_irq(pdev, 2); if (irq < 0) goto clean_ale_ret; - priv->irqs_table[2] = irq; + priv->irqs_table[1] = irq; ret = devm_request_irq(&pdev->dev, irq, cpsw_tx_interrupt, 0, dev_name(&pdev->dev), priv); if (ret < 0) { dev_err(priv->dev, "error attaching irq (%d)\n", ret); goto clean_ale_ret; } - - irq = platform_get_irq(pdev, 3); - if (irq < 0) - goto clean_ale_ret; - - priv->irqs_table[3] = irq; - ret = devm_request_irq(&pdev->dev, irq, cpsw_dummy_interrupt, - 0, dev_name(&pdev->dev), priv); - if (ret < 0) { - dev_err(priv->dev, "error attaching irq (%d)\n", ret); - goto clean_ale_ret; - } - - priv->num_irqs = 4; + priv->num_irqs = 2; ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;