From nobody Sat Apr 11 07:54:44 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C039C00140 for ; Mon, 15 Aug 2022 03:17:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229881AbiHODRL (ORCPT ); Sun, 14 Aug 2022 23:17:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229681AbiHODRH (ORCPT ); Sun, 14 Aug 2022 23:17:07 -0400 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D341112A98 for ; Sun, 14 Aug 2022 20:17:05 -0700 (PDT) Received: from dggpeml500024.china.huawei.com (unknown [172.30.72.57]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4M5fYK5t3QzGpVy; Mon, 15 Aug 2022 11:15:33 +0800 (CST) Received: from huawei.com (10.175.112.208) by dggpeml500024.china.huawei.com (7.185.36.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 15 Aug 2022 11:17:03 +0800 From: Yuan Can To: , , , CC: , Subject: [PATCH -next] iommu: Remove duplicate ida_free in iommu_group_alloc Date: Mon, 15 Aug 2022 03:14:23 +0000 Message-ID: <20220815031423.94548-1-yuancan@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.175.112.208] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpeml500024.china.huawei.com (7.185.36.10) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In the iommu_group_alloc, when the kobject_init_and_add failed, the group->kobj is associate with iommu_group_ktype, thus its release function iommu_group_release will be called by the following kobject_put. The iommu_group_release calls ida_free with the group->id, so we do not need to do it before kobject_put. Signed-off-by: Yuan Can --- drivers/iommu/iommu.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 780fb7071577..74bc9111c7be 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -654,7 +654,6 @@ struct iommu_group *iommu_group_alloc(void) ret =3D kobject_init_and_add(&group->kobj, &iommu_group_ktype, NULL, "%d", group->id); if (ret) { - ida_free(&iommu_group_ida, group->id); kobject_put(&group->kobj); return ERR_PTR(ret); } --=20 2.17.1