From patchwork Wed Mar 5 10:25:28 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Riesch X-Patchwork-Id: 3772461 Return-Path: X-Original-To: patchwork-davinci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 54300BF13A for ; Wed, 5 Mar 2014 10:27:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7217320221 for ; Wed, 5 Mar 2014 10:27:38 +0000 (UTC) Received: from bear.ext.ti.com (bear.ext.ti.com [192.94.94.41]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2B98320220 for ; Wed, 5 Mar 2014 10:27:37 +0000 (UTC) Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id s25AQFn0024022; Wed, 5 Mar 2014 04:26:15 -0600 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id s25AQDrA007029; Wed, 5 Mar 2014 04:26:13 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.174.1; Wed, 5 Mar 2014 04:26:13 -0600 Received: from linux.omap.com (dlelxs01.itg.ti.com [157.170.227.31]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s25AQCWU008245; Wed, 5 Mar 2014 04:26:12 -0600 Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id 4209C80627; Wed, 5 Mar 2014 04:26:12 -0600 (CST) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dlelxv84.itg.ti.com (dlelxv84.itg.ti.com [172.17.0.246]) by linux.omap.com (Postfix) with ESMTP id B88DD80626 for ; Wed, 5 Mar 2014 04:26:11 -0600 (CST) Received: from white.ext.ti.com (white.ext.ti.com [192.94.93.38]) by dlelxv84.itg.ti.com (8.14.3/8.13.8) with ESMTP id s25AQBBj022026 for ; Wed, 5 Mar 2014 04:26:11 -0600 Received: from mail6.bemta7.messagelabs.com (mail6.bemta7.messagelabs.com [216.82.255.55]) by white.ext.ti.com (8.13.7/8.13.7) with ESMTP id s25AQBLT024379 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 5 Mar 2014 04:26:11 -0600 Received: from [216.82.253.163:47015] by server-15.bemta-7.messagelabs.com id 0E/98-26584-3CBF6135; Wed, 05 Mar 2014 10:26:11 +0000 X-Env-Sender: christian.riesch@omicron.at X-Msg-Ref: server-10.tower-166.messagelabs.com!1394015167!15870568!1 X-Originating-IP: [212.183.10.25] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 6.9.16; banners=-,-,- X-VirusChecked: Checked Received: (qmail 21706 invoked from network); 5 Mar 2014 10:26:09 -0000 Received: from ns.omicron.at (HELO ns.omicron.at) (212.183.10.25) by server-10.tower-166.messagelabs.com with DHE-RSA-AES256-SHA encrypted SMTP; 5 Mar 2014 10:26:09 -0000 Received: from counter.omicron.at ([212.183.10.29]) by ns.omicron.at (8.13.1/8.13.1) with ESMTP id s25APwnr027300; Wed, 5 Mar 2014 11:26:03 +0100 Received: from mary.at.omicron.at (mary.at.omicron.at [172.22.100.48]) by counter.omicron.at (8.14.4/8.14.4) with ESMTP id s25APwh4008868; Wed, 5 Mar 2014 11:25:58 +0100 Received: from ChrRie22.omicron.at (172.22.3.154) by mary-special.at.omicron.at (172.22.100.48) with Microsoft SMTP Server id 8.3.327.1; Wed, 5 Mar 2014 11:25:56 +0100 From: Christian Riesch To: Subject: [PATCH] net: davinci_emac: Replace devm_request_irq with request_irq Date: Wed, 5 Mar 2014 11:25:28 +0100 X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Message-ID: <2ec3bb89-89db-48e8-b360-369545a2546f@mary.at.omicron.at> CC: , Florian Fainelli , , Jon Ringle X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: Errors-To: davinci-linux-open-source-bounces@linux.davincidsp.com X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 In commit 6892b41d9701283085b655c6086fb57a5d63fa47 Author: Lad, Prabhakar Date: Tue Jun 25 21:24:51 2013 +0530 net: davinci: emac: Convert to devm_* api the call of request_irq is replaced by devm_request_irq and the call of free_irq is removed. But since interrupts are requested in emac_dev_open, doing ifconfig up/down on the board requests the interrupts again each time, causing devm_request_irq to fail. This patch reverts said commit partially: It changes the driver back to use request_irq instead of devm_request_irq, puts free_irq back in place, but keeps the remaining changes of the original patch. Reported-by: Jon Ringle Signed-off-by: Christian Riesch Cc: Lad, Prabhakar Cc: Acked-by: Lad, Prabhakar --- drivers/net/ethernet/ti/davinci_emac.c | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index cd9b164..2514304 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1532,7 +1532,7 @@ static int emac_dev_open(struct net_device *ndev) struct device *emac_dev = &ndev->dev; u32 cnt; struct resource *res; - int ret; + int q, m, ret; int i = 0; int k = 0; struct emac_priv *priv = netdev_priv(ndev); @@ -1567,8 +1567,7 @@ static int emac_dev_open(struct net_device *ndev) while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) { for (i = res->start; i <= res->end; i++) { - if (devm_request_irq(&priv->pdev->dev, i, emac_irq, - 0, ndev->name, ndev)) + if (request_irq(i, emac_irq, 0, ndev->name, ndev)) goto rollback; } k++; @@ -1641,7 +1640,15 @@ static int emac_dev_open(struct net_device *ndev) rollback: - dev_err(emac_dev, "DaVinci EMAC: devm_request_irq() failed"); + dev_err(emac_dev, "DaVinci EMAC: request_irq() failed"); + + for (q = k; k >= 0; k--) { + for (m = i; m >= res->start; m--) + free_irq(m, ndev); + res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k-1); + m = res->end; + } + ret = -EBUSY; err: pm_runtime_put(&priv->pdev->dev); @@ -1659,6 +1666,9 @@ err: */ static int emac_dev_stop(struct net_device *ndev) { + struct resource *res; + int i = 0; + int irq_num; struct emac_priv *priv = netdev_priv(ndev); struct device *emac_dev = &ndev->dev; @@ -1674,6 +1684,13 @@ static int emac_dev_stop(struct net_device *ndev) if (priv->phydev) phy_disconnect(priv->phydev); + /* Free IRQ */ + while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, i))) { + for (irq_num = res->start; irq_num <= res->end; irq_num++) + free_irq(irq_num, priv->ndev); + i++; + } + if (netif_msg_drv(priv)) dev_notice(emac_dev, "DaVinci EMAC: %s stopped\n", ndev->name);