From patchwork Mon Sep 2 09:54:21 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 2852809 Return-Path: X-Original-To: patchwork-linux-arm@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 E4433C0AB5 for ; Mon, 2 Sep 2013 10:02:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BCC19202C0 for ; Mon, 2 Sep 2013 10:02:31 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 63CE020290 for ; Mon, 2 Sep 2013 10:02:30 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VGQxm-00060V-SW; Mon, 02 Sep 2013 10:02:27 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VGQxk-0003bf-PU; Mon, 02 Sep 2013 10:02:24 +0000 Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VGQxh-0003bM-Pd for linux-arm-kernel@lists.infradead.org; Mon, 02 Sep 2013 10:02:22 +0000 X-IronPort-AV: E=Sophos;i="4.89,1006,1367964000"; d="scan'208";a="25430805" Received: from palace.lip6.fr (HELO localhost.localdomain) ([132.227.105.202]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-SHA; 02 Sep 2013 11:54:24 +0200 From: Julia Lawall To: Wan ZongShun Subject: [PATCH 2/2] drivers:net: delete premature free_irq Date: Mon, 2 Sep 2013 11:54:21 +0200 Message-Id: <1378115661-5371-3-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.7.8.6 In-Reply-To: <1378115661-5371-1-git-send-email-Julia.Lawall@lip6.fr> References: <1378115661-5371-1-git-send-email-Julia.Lawall@lip6.fr> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130902_060222_110955_644AB9FD X-CRM114-Status: UNSURE ( 9.18 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -6.1 (------) Cc: netdev@vger.kernel.org, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-6.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 From: Julia Lawall Free_irq is not needed if there has been no request_irq. Free_irq is removed from both the probe and remove functions. The correct request_irq and free_irq are found in the open and close functions. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression e; @@ *e = platform_get_irq(...); ... when != request_irq(e,...) *free_irq(e,...) // Signed-off-by: Julia Lawall --- Not tested. drivers/net/ethernet/nuvoton/w90p910_ether.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/nuvoton/w90p910_ether.c b/drivers/net/ethernet/nuvoton/w90p910_ether.c index dcfe58f..79645f7 100644 --- a/drivers/net/ethernet/nuvoton/w90p910_ether.c +++ b/drivers/net/ethernet/nuvoton/w90p910_ether.c @@ -1014,7 +1014,7 @@ static int w90p910_ether_probe(struct platform_device *pdev) if (ether->rxirq < 0) { dev_err(&pdev->dev, "failed to get ether rx irq\n"); error = -ENXIO; - goto failed_free_txirq; + goto failed_free_io; } platform_set_drvdata(pdev, dev); @@ -1023,7 +1023,7 @@ static int w90p910_ether_probe(struct platform_device *pdev) if (IS_ERR(ether->clk)) { dev_err(&pdev->dev, "failed to get ether clock\n"); error = PTR_ERR(ether->clk); - goto failed_free_rxirq; + goto failed_free_io; } ether->rmiiclk = clk_get(&pdev->dev, "RMII"); @@ -1049,10 +1049,6 @@ failed_put_rmiiclk: clk_put(ether->rmiiclk); failed_put_clk: clk_put(ether->clk); -failed_free_rxirq: - free_irq(ether->rxirq, pdev); -failed_free_txirq: - free_irq(ether->txirq, pdev); failed_free_io: iounmap(ether->reg); failed_free_mem: @@ -1075,9 +1071,6 @@ static int w90p910_ether_remove(struct platform_device *pdev) iounmap(ether->reg); release_mem_region(ether->res->start, resource_size(ether->res)); - free_irq(ether->txirq, dev); - free_irq(ether->rxirq, dev); - del_timer_sync(ðer->check_timer); free_netdev(dev);