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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 0D358C33CAF for ; Thu, 16 Jan 2020 17:53:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CFAF42077C for ; Thu, 16 Jan 2020 17:53:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579197206; bh=YLZdc2UqRoOMt0oa38NEZj96bJP/9FVIzfbPmOQjxfE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sc3lUQJFaXsWvvkM3YOxUqErR+kz+SrKIe4xLu+BkJrCVf7LFqZOREf2ZYGevFoSK AZ7IzsaEgnu5Ngwa+i8WArLuHPRUQr9KZXlwP//IZ7x0NrFrntOO9D1BTJ8ggzH4lv IWaQ2LLtyvSe7zP0bwdlpkweonKqm54e7oqb2gzM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405903AbgAPRpF (ORCPT ); Thu, 16 Jan 2020 12:45:05 -0500 Received: from mail.kernel.org ([198.145.29.99]:36602 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406060AbgAPRpF (ORCPT ); Thu, 16 Jan 2020 12:45:05 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B4EAC2475B; Thu, 16 Jan 2020 17:45:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579196704; bh=YLZdc2UqRoOMt0oa38NEZj96bJP/9FVIzfbPmOQjxfE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AZnTlRvpXCh0Uorfxp2qlzxl/mHOvHcS2sv38/YCwYVUkY1VHYptnGFSXfFqv23L1 363uDw4nDRZIInL6eyKFDAZ3PH01l9M8z4mCouC00uE5NwOcEObQ3wdWH9rPE9f67C KRQOfvZXU2Em+LZ28djanKN+kI3upV3oq07s1uR4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Lu Baolu , Joerg Roedel , Sasha Levin , iommu@lists.linux-foundation.org Subject: [PATCH AUTOSEL 4.4 096/174] iommu: Use right function to get group for device Date: Thu, 16 Jan 2020 12:41:33 -0500 Message-Id: <20200116174251.24326-96-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116174251.24326-1-sashal@kernel.org> References: <20200116174251.24326-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Lu Baolu [ Upstream commit 57274ea25736496ee019a5c40479855b21888839 ] 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 Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- 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 a070fa39521a..2fddea9e2965 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1593,9 +1593,9 @@ 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); -- 2.20.1