From patchwork Mon Feb 8 05:17:31 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 8246761 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A068E9F1C1 for ; Mon, 8 Feb 2016 05:19:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DC792201C8 for ; Mon, 8 Feb 2016 05:19:49 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C771D2017E for ; Mon, 8 Feb 2016 05:19:48 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aSeDV-0002pl-OX; Mon, 08 Feb 2016 05:18:29 +0000 Received: from 5520-maca-inet1-outside.broadcom.com ([216.31.211.11] helo=mail-irv-18.broadcom.com) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aSeDB-0002ei-Oy for linux-arm-kernel@lists.infradead.org; Mon, 08 Feb 2016 05:18:10 +0000 Received: from mail-irva-13.broadcom.com (mail-irva-13.broadcom.com [10.11.16.103]) by mail-irv-18.broadcom.com (Postfix) with ESMTP id 5EAA78202D; Sun, 7 Feb 2016 21:17:53 -0800 (PST) Received: from anup-HP-Compaq-8100-Elite-CMT-PC.ban.broadcom.com (unknown [10.131.91.107]) by mail-irva-13.broadcom.com (Postfix) with ESMTP id 101C240FFB; Sun, 7 Feb 2016 21:17:43 -0800 (PST) From: Anup Patel To: Catalin Marinas , Joerg Roedel , Will Deacon , Robin Murphy , Sricharan R , Linux IOMMU , Linux ARM Kernel Subject: [PATCH v2 3/4] of: iommu: Increment DT node refcount in of_iommu_set_ops() Date: Mon, 8 Feb 2016 10:47:31 +0530 Message-Id: <1454908652-15317-4-git-send-email-anup.patel@broadcom.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454908652-15317-1-git-send-email-anup.patel@broadcom.com> References: <1454908652-15317-1-git-send-email-anup.patel@broadcom.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160207_211809_933825_1D21585A X-CRM114-Status: UNSURE ( 8.56 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.2 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Device Tree , Scott Branden , Pawel Moll , Ian Campbell , Ray Jui , Linux Kernel , Vikram Prakash , Rob Herring , BCM Kernel Feedback , Kumar Gala , Anup Patel 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=-4.5 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 We are saving pointer to iommu DT node in of_iommu_set_ops() hence we should increment DT node ref count. Signed-off-by: Anup Patel Reviewed-by: Ray Jui Reviewed-by: Scott Branden Reviewed-by: Robin Murphy --- drivers/iommu/of_iommu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 60ba238..5fea665 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -110,6 +110,7 @@ void of_iommu_set_ops(struct device_node *np, struct iommu_ops *ops) if (WARN_ON(!iommu)) return; + of_node_get(np); INIT_LIST_HEAD(&iommu->list); iommu->np = np; iommu->ops = ops;