From patchwork Thu Sep 1 20:15:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 665029 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3sQFrF2Pm8z9t0X for ; Fri, 2 Sep 2016 07:34:05 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934870AbcIAVd7 (ORCPT ); Thu, 1 Sep 2016 17:33:59 -0400 Received: from foss.arm.com ([217.140.101.70]:39366 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934875AbcIAVd4 (ORCPT ); Thu, 1 Sep 2016 17:33:56 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B94B35CA5; Thu, 1 Sep 2016 13:15:11 -0700 (PDT) Received: from beelzebub.ast.arm.com (unknown [10.118.96.220]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 6FC263F303; Thu, 1 Sep 2016 13:15:11 -0700 (PDT) From: Jeremy Linton To: netdev@vger.kernel.org Cc: steve.glendinning@shawell.net, sergei.shtylyov@cogentembedded.com, andrew@lunn.ch, will.deacon@arm.com Subject: [PATCH 4/4] net: smsc911x: Move interrupt allocation to open/stop Date: Thu, 1 Sep 2016 15:15:09 -0500 Message-Id: <1472760909-19688-5-git-send-email-jeremy.linton@arm.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1472760909-19688-1-git-send-email-jeremy.linton@arm.com> References: <1472760909-19688-1-git-send-email-jeremy.linton@arm.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The /proc/irq/xx information is incorrect for smsc911x because the request_irq is happening before the register_netdev has the proper device name. Moving it to the open also fixes the case of when the device is renamed. Reported-by: Will Deacon Signed-off-by: Jeremy Linton Tested-by: Will Deacon --- drivers/net/ethernet/smsc/smsc911x.c | 47 ++++++++++++++---------------------- 1 file changed, 18 insertions(+), 29 deletions(-) diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index c2e56f0..4f8910b 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1575,6 +1575,7 @@ static int smsc911x_open(struct net_device *dev) unsigned int temp; unsigned int intcfg; int retval; + int irq_flags; /* find and start the given phy */ if (!dev->phydev) { @@ -1645,6 +1646,15 @@ static int smsc911x_open(struct net_device *dev) pdata->software_irq_signal = 0; smp_wmb(); + irq_flags = irq_get_trigger_type(dev->irq); + retval = request_irq(dev->irq, smsc911x_irqhandler, + irq_flags | IRQF_SHARED, dev->name, dev); + if (retval) { + SMSC_WARN(pdata, probe, + "Unable to claim requested irq: %d", dev->irq); + goto mii_free_out; + } + temp = smsc911x_reg_read(pdata, INT_EN); temp |= INT_EN_SW_INT_EN_; smsc911x_reg_write(pdata, INT_EN, temp); @@ -1660,7 +1670,7 @@ static int smsc911x_open(struct net_device *dev) netdev_warn(dev, "ISR failed signaling test (IRQ %d)\n", dev->irq); retval = -ENODEV; - goto mii_free_out; + goto irq_stop_out; } SMSC_TRACE(pdata, ifup, "IRQ handler passed test using IRQ %d", dev->irq); @@ -1707,6 +1717,8 @@ static int smsc911x_open(struct net_device *dev) netif_start_queue(dev); return 0; +irq_stop_out: + free_irq(dev->irq, dev); mii_free_out: phy_disconnect(dev->phydev); dev->phydev = NULL; @@ -1733,6 +1745,8 @@ static int smsc911x_stop(struct net_device *dev) dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); smsc911x_tx_update_txcounters(dev); + free_irq(dev->irq, dev); + /* Bring the PHY down */ if (dev->phydev) { phy_stop(dev->phydev); @@ -2308,7 +2322,6 @@ static int smsc911x_drv_remove(struct platform_device *pdev) mdiobus_free(pdata->mii_bus); unregister_netdev(dev); - free_irq(dev->irq, dev); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smsc911x-memory"); if (!res) @@ -2393,8 +2406,7 @@ static int smsc911x_drv_probe(struct platform_device *pdev) struct smsc911x_data *pdata; struct smsc911x_platform_config *config = dev_get_platdata(&pdev->dev); struct resource *res; - unsigned int intcfg = 0; - int res_size, irq, irq_flags; + int res_size, irq; int retval; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, @@ -2433,7 +2445,6 @@ static int smsc911x_drv_probe(struct platform_device *pdev) pdata = netdev_priv(dev); dev->irq = irq; - irq_flags = irq_get_trigger_type(irq); pdata->ioaddr = ioremap_nocache(res->start, res_size); pdata->dev = dev; @@ -2480,38 +2491,18 @@ static int smsc911x_drv_probe(struct platform_device *pdev) if (retval < 0) goto out_disable_resources; - /* configure irq polarity and type before connecting isr */ - if (pdata->config.irq_polarity == SMSC911X_IRQ_POLARITY_ACTIVE_HIGH) - intcfg |= INT_CFG_IRQ_POL_; - - if (pdata->config.irq_type == SMSC911X_IRQ_TYPE_PUSH_PULL) - intcfg |= INT_CFG_IRQ_TYPE_; - - smsc911x_reg_write(pdata, INT_CFG, intcfg); - - /* Ensure interrupts are globally disabled before connecting ISR */ - smsc911x_disable_irq_chip(dev); - - retval = request_irq(dev->irq, smsc911x_irqhandler, - irq_flags | IRQF_SHARED, dev->name, dev); - if (retval) { - SMSC_WARN(pdata, probe, - "Unable to claim requested irq: %d", dev->irq); - goto out_disable_resources; - } - netif_carrier_off(dev); retval = smsc911x_mii_init(pdev, dev); if (retval) { SMSC_WARN(pdata, probe, "Error %i initialising mii", retval); - goto out_free_irq; + goto out_disable_resources; } retval = register_netdev(dev); if (retval) { SMSC_WARN(pdata, probe, "Error %i registering device", retval); - goto out_free_irq; + goto out_disable_resources; } else { SMSC_TRACE(pdata, probe, "Network interface: \"%s\"", dev->name); @@ -2552,8 +2543,6 @@ static int smsc911x_drv_probe(struct platform_device *pdev) return 0; -out_free_irq: - free_irq(dev->irq, dev); out_disable_resources: pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev);