From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 920E1C43381 for ; Mon, 18 Mar 2019 10:04:00 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5EC992063F for ; Mon, 18 Mar 2019 10:04:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZZx3AVoh"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=synopsys.com header.i=@synopsys.com header.b="WY3dJWeA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5EC992063F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=synopsys.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=gFz4A7DkRaqhu8HvZEMOBFR9ilDusR3P30BuOzSgTgw=; b=ZZx3AVohkRUDV+ Ah0KQnEGiD1wjLFK/eSYrh/VmamuaUObPnYrvIM8sKSLqt1Dwf0RYHn7mHRWebfijUsXlfKJkqJg1 7GHGREuexDw9mFEw2KltXctbgZsWJ7Ea7bqW+40mHBgk8HybnstwtzvjU5u4lPKuTFVylCLS5ep39 IDzjPtYJDjRbqlHhOkCmoiWSqn6ZZMCOYc7MupML1XpSmABvKU/i0LU53jIth8aqFRtG1fzSVl0E8 lmthH6xvcfMtoqja/hrQwprFQ2UD9Izd+C7KWjRGnyDT2lsZ8X1wSfmIx/qrvsbZWl/opiZ0yc/wO ESIbinWrly9NgEnMcq1g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h5p7a-0007gU-6C; Mon, 18 Mar 2019 10:03:54 +0000 Received: from us01smtprelay-2.synopsys.com ([198.182.47.9] helo=smtprelay.synopsys.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h5p7W-0007gA-6O for linux-arm-kernel@lists.infradead.org; Mon, 18 Mar 2019 10:03:52 +0000 Received: from mailhost.synopsys.com (dc8-mailhost2.synopsys.com [10.13.135.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtprelay.synopsys.com (Postfix) with ESMTPS id 82F0A24E2E0F; Mon, 18 Mar 2019 03:03:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1552903426; bh=OwQOkRbBOR8voSThbnyUFP4XiZJPg6aSlJeILTKQx0Q=; h=Subject:To:CC:References:From:Date:In-Reply-To:From; b=WY3dJWeAUCYZzjVe1LKSp/xFe/xhvhRlrznTX/AnOWyDwT0lHtY0UGg1pBxtEQfFB 2r7A8fOedKQH+d1NGF4XF9+yISiWNhOy4NLbjWMMxEM7lAXP3MnTNlJxsg/De63wkZ FYKDEZ+TqvFWxVsFKJ8ioqO0r1xCi0QdVLRVYrmsohQyhiC0rmb9/eqvhDnXAgm43x IFQn2hZ96iKEz5MdJlxPc8HQez0IbsJD0ZlBitSdOXpRYX4jZ0bqDC/MfDZG7v6yDA WCt0JU9ZCtl3kKGmzUZEtwCcH+rcLexI0hV29qMGHlhLjC6/OQDrsu0koVxRLyNC3G uug5dNekouFgA== Received: from us01wehtc1.internal.synopsys.com (us01wehtc1-vip.internal.synopsys.com [10.12.239.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mailhost.synopsys.com (Postfix) with ESMTPS id 88002A0062; Mon, 18 Mar 2019 10:03:44 +0000 (UTC) Received: from DE02WEHTCB.internal.synopsys.com (10.225.19.94) by us01wehtc1.internal.synopsys.com (10.12.239.235) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 18 Mar 2019 03:03:44 -0700 Received: from DE02WEHTCA.internal.synopsys.com (10.225.19.92) by DE02WEHTCB.internal.synopsys.com (10.225.19.94) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 18 Mar 2019 11:03:42 +0100 Received: from [10.107.25.131] (10.107.25.131) by DE02WEHTCA.internal.synopsys.com (10.225.19.80) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 18 Mar 2019 11:03:41 +0100 Subject: Re: [PATCH v3 2/5] PCI: dwc: Free the page for MSI IRQ in dw_pcie_free_msi() To: Jisheng Zhang , Jingoo Han , Gustavo Pimentel , Lorenzo Pieralisi , Bjorn Helgaas References: <20190318174415.74fd25a5@xhacker.debian> <20190318174711.4b7e556a@xhacker.debian> From: Gustavo Pimentel Message-ID: <97016e8d-9975-84a0-5ab3-dc4009227927@synopsys.com> Date: Mon, 18 Mar 2019 10:03:40 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.3 MIME-Version: 1.0 In-Reply-To: <20190318174711.4b7e556a@xhacker.debian> Content-Language: en-US X-Originating-IP: [10.107.25.131] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190318_030350_246436_E1370A1F X-CRM114-Status: GOOD ( 16.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "linux-pci@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 18/03/2019 09:54, Jisheng Zhang wrote: > To avoid memory leak, we need to free the page for MSI in > dw_pcie_free_msi(). > > Signed-off-by: Jisheng Zhang > --- > drivers/pci/controller/dwc/pcie-designware-host.c | 12 ++++++++---- > drivers/pci/controller/dwc/pcie-designware.h | 1 + > 2 files changed, 9 insertions(+), 4 deletions(-) > > diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c > index 1040939f45b4..a71b874ae3c0 100644 > --- a/drivers/pci/controller/dwc/pcie-designware-host.c > +++ b/drivers/pci/controller/dwc/pcie-designware-host.c > @@ -305,20 +305,24 @@ void dw_pcie_free_msi(struct pcie_port *pp) > > irq_domain_remove(pp->msi_domain); > irq_domain_remove(pp->irq_domain); > + > + if (pp->msi_page) > + __free_page(pp->msi_page); > } > > void dw_pcie_msi_init(struct pcie_port *pp) > { > struct dw_pcie *pci = to_dw_pcie_from_pp(pp); > struct device *dev = pci->dev; > - struct page *page; > u64 msi_target; > > - page = alloc_page(GFP_KERNEL); > - pp->msi_data = dma_map_page(dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE); > + pp->msi_page = alloc_page(GFP_KERNEL); > + pp->msi_data = dma_map_page(dev, pp->msi_page, 0, PAGE_SIZE, > + DMA_FROM_DEVICE); > if (dma_mapping_error(dev, pp->msi_data)) { > dev_err(dev, "Failed to map MSI data\n"); > - __free_page(page); > + __free_page(pp->msi_page); > + pp->msi_page = NULL; > return; > } > msi_target = (u64)pp->msi_data; > diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h > index 377f4c0b52da..6fb0a1879932 100644 > --- a/drivers/pci/controller/dwc/pcie-designware.h > +++ b/drivers/pci/controller/dwc/pcie-designware.h > @@ -179,6 +179,7 @@ struct pcie_port { > struct irq_domain *irq_domain; > struct irq_domain *msi_domain; > dma_addr_t msi_data; > + struct page *msi_page; > u32 num_vectors; > u32 irq_mask[MAX_MSI_CTRLS]; > raw_spinlock_t lock; > Acked-by: Gustavo Pimentel _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel