From patchwork Mon May 24 10:46:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiapeng Chong X-Patchwork-Id: 74494 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1ll871-001oko-AT; Mon, 24 May 2021 10:47:07 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232516AbhEXKsc (ORCPT + 1 other); Mon, 24 May 2021 06:48:32 -0400 Received: from out30-130.freemail.mail.aliyun.com ([115.124.30.130]:56560 "EHLO out30-130.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232426AbhEXKsa (ORCPT ); Mon, 24 May 2021 06:48:30 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R101e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=jiapeng.chong@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0UZw1ezY_1621853215; Received: from j63c13417.sqa.eu95.tbsite.net(mailfrom:jiapeng.chong@linux.alibaba.com fp:SMTPD_---0UZw1ezY_1621853215) by smtp.aliyun-inc.com(127.0.0.1); Mon, 24 May 2021 18:47:01 +0800 From: Jiapeng Chong To: alexander.deucher@amd.com Cc: christian.koenig@amd.com, airlied@linux.ie, daniel@ffwll.ch, sumit.semwal@linaro.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Jiapeng Chong Subject: [PATCH] drm/amdgpu: remove unreachable code Date: Mon, 24 May 2021 18:46:53 +0800 Message-Id: <1621853213-55876-1-git-send-email-jiapeng.chong@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -3.1 (---) X-LSpam-Report: No, score=-3.1 required=5.0 tests=BAYES_00=-1.9,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_LOW=-0.7,UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no 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 --- drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c index 82f0542..375b346 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c @@ -842,8 +842,6 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx, DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type); return -EINVAL; } - BUG(); - return -EINVAL; } /**