From mboxrd@z Thu Jan 1 00:00:00 1970 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=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 75DB7C4320A for ; Tue, 24 Aug 2021 22:54:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 557DA61373 for ; Tue, 24 Aug 2021 22:54:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233142AbhHXWzg (ORCPT ); Tue, 24 Aug 2021 18:55:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:49156 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231842AbhHXWze (ORCPT ); Tue, 24 Aug 2021 18:55:34 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C9DBF61139; Tue, 24 Aug 2021 22:54:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629845689; bh=soYdqs0Qs7xCVvPch05cxgy1fyh2lip8GCF4qssf2PA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vIYXerymKENVREB2YJr0myqfiT+haL9C5Kk2wzNPhXo/BAjH8MM2i+/kGyW1v3jZr g5RZ8cCWNXVnFD2zQ4K53bgZbKVfygJ1UjrLWmHHQ0SHKYWG0WQyJgvCgIlbK7R0IB wROIp6NwWMuDFgWhdCjBpDIEw9ByiO4YoT/Yl2XiFNqd5bf+8N0UTyM/0UuiUPlTeD nsJu5bixEpR4ux0D3P2lqz9vPUVHFhU4QGT6GBI7XteNt7Cigab2BmWYYWv24hJ3w1 Y1RYNWAm52byXpxddb/K3PWdHwOC7SNUdm8Y2x6mBkv6z5RBWQCRejbbezXR9zHr6u yuast6MJAW/9w== From: Nathan Chancellor To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi Cc: Jason Ekstrand , =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= , Matthew Auld , "Michael J. Ruhl" , Nick Desaulniers , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, llvm@lists.linux.dev, Nathan Chancellor , Dan Carpenter Subject: [PATCH 2/3] drm/i915/selftests: Always initialize err in igt_dmabuf_import_same_driver_lmem() Date: Tue, 24 Aug 2021 15:54:26 -0700 Message-Id: <20210824225427.2065517-3-nathan@kernel.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210824225427.2065517-1-nathan@kernel.org> References: <20210824225427.2065517-1-nathan@kernel.org> MIME-Version: 1.0 X-Patchwork-Bot: notify Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Clang warns: drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:127:13: warning: variable 'err' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] } else if (PTR_ERR(import) != -EOPNOTSUPP) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:138:9: note: uninitialized use occurs here return err; ^~~ drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:127:9: note: remove the 'if' if its condition is always true } else if (PTR_ERR(import) != -EOPNOTSUPP) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:95:9: note: initialize the variable 'err' to silence this warning int err; ^ = 0 The test is expected to pass if i915_gem_prime_import() returns -EOPNOTSUPP so initialize err to zero in this case. Fixes: cdb35d1ed6d2 ("drm/i915/gem: Migrate to system at dma-buf attach time (v7)") Reported-by: Dan Carpenter Signed-off-by: Nathan Chancellor --- drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c index 532c7955b300..4a6bb64c3a35 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c @@ -128,6 +128,8 @@ static int igt_dmabuf_import_same_driver_lmem(void *arg) pr_err("i915_gem_prime_import failed with the wrong err=%ld\n", PTR_ERR(import)); err = PTR_ERR(import); + } else { + err = 0; } dma_buf_put(dmabuf); -- 2.33.0