From patchwork Mon Nov 9 14:38:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Xiaoxu X-Patchwork-Id: 11893523 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=-12.7 required=3.0 tests=BAYES_00, 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 8D72FC5517A for ; Tue, 10 Nov 2020 08:17:54 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DD74F2080A for ; Tue, 10 Nov 2020 08:17:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DD74F2080A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9C60B89991; Tue, 10 Nov 2020 08:17:44 +0000 (UTC) Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2756E898C6 for ; Mon, 9 Nov 2020 14:36:17 +0000 (UTC) Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4CVD7k4hKrzLwXr; Mon, 9 Nov 2020 22:36:02 +0800 (CST) Received: from localhost.localdomain (10.175.101.6) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Mon, 9 Nov 2020 22:36:07 +0800 From: zhangxiaoxu To: , , , , , , Subject: [PATCH] drm/vboxvideo: Fix return check for devm_gen_pool_create() Date: Mon, 9 Nov 2020 09:38:57 -0500 Message-ID: <20201109143857.1539831-1-zhangxiaoxu5@huawei.com> X-Mailer: git-send-email 2.25.4 MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-CFilter-Loop: Reflected X-Mailman-Approved-At: Tue, 10 Nov 2020 08:16:56 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" devm_gen_pool_create() returns a valid pointer on success or ERR_PTR on failure which should be checked with IS_ERR. Also use PTR_ERR for returning error codes. Fixes: 4cc9b565454b ("drm/vboxvideo: Use devm_gen_pool_create") Reported-by: Hulk Robot Signed-off-by: zhangxiaoxu --- drivers/gpu/drm/vboxvideo/vbox_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vboxvideo/vbox_main.c b/drivers/gpu/drm/vboxvideo/vbox_main.c index d68d9bad7674..c5ea880d17b2 100644 --- a/drivers/gpu/drm/vboxvideo/vbox_main.c +++ b/drivers/gpu/drm/vboxvideo/vbox_main.c @@ -123,8 +123,8 @@ int vbox_hw_init(struct vbox_private *vbox) /* Create guest-heap mem-pool use 2^4 = 16 byte chunks */ vbox->guest_pool = devm_gen_pool_create(vbox->ddev.dev, 4, -1, "vboxvideo-accel"); - if (!vbox->guest_pool) - return -ENOMEM; + if (IS_ERR(vbox->guest_pool)) + return PTR_ERR(vbox->guest_pool); ret = gen_pool_add_virt(vbox->guest_pool, (unsigned long)vbox->guest_heap,