From patchwork Fri May 28 09:29:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jiapeng Chong X-Patchwork-Id: 12286489 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 F418BC47087 for ; Fri, 28 May 2021 09:29:32 +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 BAEAA6127A for ; Fri, 28 May 2021 09:29:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BAEAA6127A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.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 39CC66EDE8; Fri, 28 May 2021 09:29:32 +0000 (UTC) Received: from out30-132.freemail.mail.aliyun.com (out30-132.freemail.mail.aliyun.com [115.124.30.132]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3A88E6EDE8; Fri, 28 May 2021 09:29:30 +0000 (UTC) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R111e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04400; MF=jiapeng.chong@linux.alibaba.com; NM=1; PH=DS; RN=11; SR=0; TI=SMTPD_---0UaMfT3T_1622194161; Received: from j63c13417.sqa.eu95.tbsite.net(mailfrom:jiapeng.chong@linux.alibaba.com fp:SMTPD_---0UaMfT3T_1622194161) by smtp.aliyun-inc.com(127.0.0.1); Fri, 28 May 2021 17:29:27 +0800 From: Jiapeng Chong To: alexander.deucher@amd.com Subject: [PATCH v3] amdgpu: remove unreachable code Date: Fri, 28 May 2021 17:29:18 +0800 Message-Id: <1622194158-70898-1-git-send-email-jiapeng.chong@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 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: , Cc: Jiapeng Chong , airlied@linux.ie, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, amd-gfx@lists.freedesktop.org, christian.koenig@amd.com, linux-media@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In the function amdgpu_uvd_cs_msg(), every branch in the switch statement will have a return, so the code below the switch statement will not be executed. Eliminate the follow smatch warning: drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:845 amdgpu_uvd_cs_msg() warn: ignoring unreachable code. Reported-by: Abaci Robot Signed-off-by: Jiapeng Chong Reviewed-by: Christian König --- Changes in v2: -For the follow advice: https://lore.kernel.org/patchwork/patch/1435968/ drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c index c6dbc08..35f6874 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c @@ -829,9 +829,8 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx, default: DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type); - return -EINVAL; } - BUG(); + return -EINVAL; }