From patchwork Fri Jan 27 22:14:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1733133 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=mLoGepRJ; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P3X1J0g78z23hm for ; Sat, 28 Jan 2023 09:14:28 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231701AbjA0WOZ (ORCPT ); Fri, 27 Jan 2023 17:14:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51020 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231439AbjA0WOY (ORCPT ); Fri, 27 Jan 2023 17:14:24 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08CA384942; Fri, 27 Jan 2023 14:14:24 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 933BF61DA1; Fri, 27 Jan 2023 22:14:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 024A6C433D2; Fri, 27 Jan 2023 22:14:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674857663; bh=o/wZZ1uzmJ7qFEw1pt+mcU/ptJZ13hgGGF/CULyoMJ4=; h=From:To:Cc:Subject:Date:From; b=mLoGepRJuyf4fEgFO26waiEfOSuAf6TdWVpNp3P2k9Gc2tm2E3uR46Xo/hjAvRSet 3/zhelAgl+1nCivDb+TKA7OZqmbagmtWbCHwESGfWG3n6+6mPt3Y41FkJzxMH/y4i6 7R5cvH3+cCuaZFsIzs9zYOaayHTfpDbb3GGIAmlyJNQ4Nu3GmPEnSL1vSMF3yZt5Ca PFtEYg4t2SqqTqfrm/8ZNtyys6xN4qqm3mQZN6v75bG26CdYnVl2TeLfkTZjvXrvJc giocRsVf3XzUHNtQbHmKuK8DvM1Ek1/x5K0wyYtasolTEg7/2qB6aGjQp00vFKNL5Y zt+Sp8L7RVdGg== From: Arnd Bergmann To: Thierry Reding , David Airlie , Daniel Vetter Cc: Arnd Bergmann , Nathan Chancellor , Nick Desaulniers , Tom Rix , Mikko Perttunen , Christophe JAILLET , Robin Murphy , dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH] gpu: host1x: fix uninitialized variable use Date: Fri, 27 Jan 2023 23:14:00 +0100 Message-Id: <20230127221418.2522612-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org From: Arnd Bergmann The error handling for platform_get_irq() failing no longer works after a recent change, clang now points this out with a warning: drivers/gpu/host1x/dev.c:520:6: error: variable 'syncpt_irq' is uninitialized when used here [-Werror,-Wuninitialized] if (syncpt_irq < 0) ^~~~~~~~~~ Fix this by removing the variable and checking the correct error status. Fixes: 625d4ffb438c ("gpu: host1x: Rewrite syncpoint interrupt handling") Signed-off-by: Arnd Bergmann Reviewed-by: Nathan Chancellor Reviewed-by: Mikko Perttunen Reported-by: "kernelci.org bot" Reviewed-by: Nick Desaulniers Reviewed-by: Jon Hunter --- drivers/gpu/host1x/dev.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index 4872d183d860..aae2efeef503 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -487,7 +487,6 @@ static int host1x_get_resets(struct host1x *host) static int host1x_probe(struct platform_device *pdev) { struct host1x *host; - int syncpt_irq; int err; host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); @@ -517,8 +516,8 @@ static int host1x_probe(struct platform_device *pdev) } host->syncpt_irq = platform_get_irq(pdev, 0); - if (syncpt_irq < 0) - return syncpt_irq; + if (host->syncpt_irq < 0) + return host->syncpt_irq; mutex_init(&host->devices_lock); INIT_LIST_HEAD(&host->devices);