From patchwork Thu Jul 13 02:05:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gaosheng Cui X-Patchwork-Id: 702861 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 996EDC001DD for ; Thu, 13 Jul 2023 02:06:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232167AbjGMCGI (ORCPT ); Wed, 12 Jul 2023 22:06:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233466AbjGMCGG (ORCPT ); Wed, 12 Jul 2023 22:06:06 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1927C2101 for ; Wed, 12 Jul 2023 19:06:00 -0700 (PDT) Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.53]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4R1dH73wNVz18LQV; Thu, 13 Jul 2023 10:05:23 +0800 (CST) Received: from cgs.huawei.com (10.244.148.83) by kwepemi500012.china.huawei.com (7.221.188.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Thu, 13 Jul 2023 10:05:58 +0800 From: Gaosheng Cui To: , , , , , , , , , , , , , , , CC: , , Subject: [PATCH v2 3/3] drm/komeda: Fix IS_ERR() vs NULL check in komeda_component_get_avail_scaler() Date: Thu, 13 Jul 2023 10:05:56 +0800 Message-ID: <20230713020556.1956639-4-cuigaosheng1@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230713020556.1956639-1-cuigaosheng1@huawei.com> References: <20230713020556.1956639-1-cuigaosheng1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.244.148.83] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemi500012.china.huawei.com (7.221.188.12) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The komeda_pipeline_get_state() returns an ERR_PTR() on failure, we should use IS_ERR() to check the return value. Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE") Signed-off-by: Gaosheng Cui --- drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c index 3276a3e82c62..e9c92439398d 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c @@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c, u32 avail_scalers; pipe_st = komeda_pipeline_get_state(c->pipeline, state); - if (!pipe_st) + if (IS_ERR(pipe_st)) return NULL; avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^