From patchwork Mon Sep 28 17:21:17 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Henriques X-Patchwork-Id: 523432 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) by ozlabs.org (Postfix) with ESMTP id E124314017E; Tue, 29 Sep 2015 03:21:56 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1Zgc7c-0006Zo-Nj; Mon, 28 Sep 2015 17:21:52 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1Zgc75-0006EK-6x for kernel-team@lists.ubuntu.com; Mon, 28 Sep 2015 17:21:19 +0000 Received: from 1.general.henrix.uk.vpn ([10.172.192.212] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1Zgc74-0001ih-Cn; Mon, 28 Sep 2015 17:21:18 +0000 From: Luis Henriques To: David Daney Subject: [3.16.y-ckt stable] Patch "of/address: Don't loop forever in of_find_matching_node_by_address()." has been added to staging queue Date: Mon, 28 Sep 2015 18:21:17 +0100 Message-Id: <1443460877-3761-1-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 2.1.4 X-Extended-Stable: 3.16 Cc: Rob Herring , kernel-team@lists.ubuntu.com X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.14 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: kernel-team-bounces@lists.ubuntu.com This is a note to let you know that I have just added a patch titled of/address: Don't loop forever in of_find_matching_node_by_address(). to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue This patch is scheduled to be released in version 3.16.7-ckt18. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.16.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From ea95c94193705386425e4022ca3396e93f115830 Mon Sep 17 00:00:00 2001 From: David Daney Date: Wed, 19 Aug 2015 13:17:47 -0700 Subject: of/address: Don't loop forever in of_find_matching_node_by_address(). commit 3a496b00b6f90c41bd21a410871dfc97d4f3c7ab upstream. If the internal call to of_address_to_resource() fails, we end up looping forever in of_find_matching_node_by_address(). This can be caused by a defective device tree, or calling with an incorrect matches argument. Fix by calling of_find_matching_node() unconditionally at the end of the loop. Signed-off-by: David Daney Signed-off-by: Rob Herring Signed-off-by: Luis Henriques --- drivers/of/address.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/of/address.c b/drivers/of/address.c index bab28871b992..5af2a0deff14 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -691,10 +691,10 @@ struct device_node *of_find_matching_node_by_address(struct device_node *from, struct resource res; while (dn) { - if (of_address_to_resource(dn, 0, &res)) - continue; - if (res.start == base_address) + if (!of_address_to_resource(dn, 0, &res) && + res.start == base_address) return dn; + dn = of_find_matching_node(dn, matches); }