From patchwork Thu Apr 22 08:14:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claire Chang X-Patchwork-Id: 12217921 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 06071C43460 for ; Thu, 22 Apr 2021 08:15:46 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 AB621613C0 for ; Thu, 22 Apr 2021 08:15:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB621613C0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.115103.219451 (Exim 4.92) (envelope-from ) id 1lZUUr-0001yD-Gi; Thu, 22 Apr 2021 08:15:37 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 115103.219451; Thu, 22 Apr 2021 08:15:37 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZUUr-0001y6-DX; Thu, 22 Apr 2021 08:15:37 +0000 Received: by outflank-mailman (input) for mailman id 115103; Thu, 22 Apr 2021 08:15:35 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZUUp-0001sR-9I for xen-devel@lists.xenproject.org; Thu, 22 Apr 2021 08:15:35 +0000 Received: from mail-pl1-x62f.google.com (unknown [2607:f8b0:4864:20::62f]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 899d8346-f455-4f97-9d1d-009718baefdf; Thu, 22 Apr 2021 08:15:27 +0000 (UTC) Received: by mail-pl1-x62f.google.com with SMTP id v13so9538302ple.9 for ; Thu, 22 Apr 2021 01:15:27 -0700 (PDT) Received: from localhost ([2401:fa00:1:10:1a8e:1bde:f79e:c302]) by smtp.gmail.com with UTF8SMTPSA id o30sm1546049pgc.55.2021.04.22.01.15.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Apr 2021 01:15:26 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 899d8346-f455-4f97-9d1d-009718baefdf DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=KeK8DSQdHPnfBsnYoJml8hxFMiJru7O0NA4XbeWzkSY=; b=AsZrZqJIimVAtGXMRVsWcKrsorVck1XgLTh3pHNLrWSxkdDRnGm7t6TqpM5ldf6xB7 mC86KkbKnwzlnS/clKnP6s/9uO1XB8opjFqiCDh6A7+1mZw2SFs1IwNU2LHHphHOt6QY p2b9YBU51p/mzY9rCQjA96SJjLr18SEsXNgpY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=KeK8DSQdHPnfBsnYoJml8hxFMiJru7O0NA4XbeWzkSY=; b=MjLrYdztI8oDoCeH1rDevqpR02tmZrrKdUL6gRxbp4ekDL4joZqGnelPwUqsGNtsXB 9A0ijWidMl6z4CKBuSywjnIdYR7I3KYLp89BFQamPATgwqX8TY8UD6T0hDC+R3BXDlG7 ZLRjdsRj2MyZdFO0eM6yqCL64bwQIrVTHmXIRr9bcoAmISdUFOIY5+xqTMsCV05iM3SK soPOZgtX0IL4ye6x6rM7cWo8MjI+bKykORiq2aCo1/1/pizzBFznelLAy3IHds228/m+ 0BHIY6280p5yFMbzzNAR4iwXPRNUHHs5LTKbMHTgHgmMMdMzLvgHK81Akr+8xH8JbdZd xCwA== X-Gm-Message-State: AOAM531VOaUhiXUvP45QPXbcV+o2N9Sh8K9eVq2q7sOg8KOim8XyF9J4 wiZQ3L1cO+I0pWlQAfuU+RhtSA== X-Google-Smtp-Source: ABdhPJx3x6k3UuJoTeVgHgSVZk2TSCFARKLuNRut1DwuLYspzTDGMvJMpDB6O5YCyQkIwGCuRKmyJg== X-Received: by 2002:a17:90b:298:: with SMTP id az24mr2746175pjb.123.1619079327035; Thu, 22 Apr 2021 01:15:27 -0700 (PDT) From: Claire Chang To: Joerg Roedel , Will Deacon , Frank Rowand , Konrad Rzeszutek Wilk , boris.ostrovsky@oracle.com, jgross@suse.com, Christoph Hellwig , Marek Szyprowski Cc: benh@kernel.crashing.org, paulus@samba.org, "list@263.net:IOMMU DRIVERS" , sstabellini@kernel.org, Robin Murphy , grant.likely@arm.com, xypron.glpk@gmx.de, Thierry Reding , mingo@kernel.org, bauerman@linux.ibm.com, peterz@infradead.org, Greg KH , Saravana Kannan , "Rafael J . Wysocki" , heikki.krogerus@linux.intel.com, Andy Shevchenko , Randy Dunlap , Dan Williams , Bartosz Golaszewski , linux-devicetree , lkml , linuxppc-dev@lists.ozlabs.org, xen-devel@lists.xenproject.org, Nicolas Boichat , Jim Quinlan , tfiga@chromium.org, bskeggs@redhat.com, bhelgaas@google.com, chris@chris-wilson.co.uk, tientzu@chromium.org, daniel@ffwll.ch, airlied@linux.ie, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com, jxgao@google.com, joonas.lahtinen@linux.intel.com, linux-pci@vger.kernel.org, maarten.lankhorst@linux.intel.com, matthew.auld@intel.com, nouveau@lists.freedesktop.org, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com Subject: [PATCH v5 01/16] swiotlb: Fix the type of index Date: Thu, 22 Apr 2021 16:14:53 +0800 Message-Id: <20210422081508.3942748-2-tientzu@chromium.org> X-Mailer: git-send-email 2.31.1.368.gbe11c130af-goog In-Reply-To: <20210422081508.3942748-1-tientzu@chromium.org> References: <20210422081508.3942748-1-tientzu@chromium.org> MIME-Version: 1.0 Fix the type of index from unsigned int to int since find_slots() might return -1. Fixes: 0774983bc923 ("swiotlb: refactor swiotlb_tbl_map_single") Signed-off-by: Claire Chang Reviewed-by: Christoph Hellwig --- kernel/dma/swiotlb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 0a5b6f7e75bc..8635a57f88e9 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -499,7 +499,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr, { struct io_tlb_mem *mem = io_tlb_default_mem; unsigned int offset = swiotlb_align_offset(dev, orig_addr); - unsigned int index, i; + unsigned int i; + int index; phys_addr_t tlb_addr; if (!mem)