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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 904A7C04AAF for ; Tue, 21 May 2019 07:34:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6DA322173E for ; Tue, 21 May 2019 07:34:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726833AbfEUHeY (ORCPT ); Tue, 21 May 2019 03:34:24 -0400 Received: from mga02.intel.com ([134.134.136.20]:28295 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726011AbfEUHeY (ORCPT ); Tue, 21 May 2019 03:34:24 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 May 2019 00:34:23 -0700 X-ExtLoop1: 1 Received: from allen-box.sh.intel.com ([10.239.159.136]) by orsmga005.jf.intel.com with ESMTP; 21 May 2019 00:34:22 -0700 From: Lu Baolu To: Joerg Roedel Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Lu Baolu Subject: [PATCH 1/1] iommu: Use right function to get group for device Date: Tue, 21 May 2019 15:27:35 +0800 Message-Id: <20190521072735.27401-1-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The iommu_group_get_for_dev() will allocate a group for a device if it isn't in any group. This isn't the use case in iommu_request_dm_for_dev(). Let's use iommu_group_get() instead. Fixes: d290f1e70d85a ("iommu: Introduce iommu_request_dm_for_dev()") Signed-off-by: Lu Baolu --- drivers/iommu/iommu.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 67ee6623f9b2..3fa025f849e9 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1915,9 +1915,9 @@ int iommu_request_dm_for_dev(struct device *dev) int ret; /* Device must already be in a group before calling this function */ - group = iommu_group_get_for_dev(dev); - if (IS_ERR(group)) - return PTR_ERR(group); + group = iommu_group_get(dev); + if (!group) + return -EINVAL; mutex_lock(&group->mutex); -- 2.17.1