From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5EB521F9F64 for ; Wed, 8 Jan 2025 11:07:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736334428; cv=none; b=U8R3twKLYA7PLGPce4PsbNddd62owyTxpp+BXzVCENYu6VkPDy7f3Vn09vNuREl0Qhm/UQ52wPp4xXxxOhsvS4q6MNiMX1z7C3/WcQyiefGStECrwb20qiUOTDIfE+txfaPz5P35gOcNWnvdbN/7d5ac4I1HS5c6wpQ5ZpjGPg4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736334428; c=relaxed/simple; bh=KfteZbyV26PCsgidSMPbtLu3MzZ0qK03E76djIPw6lc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=GOOJ4gwbL7IsL9qA3eFslHaRisVDwETcHq0BYg2ZB5l72p1FL+0l30zzKUcpydaGiV5o1iD4Ry5yM8mAjAyuepEIxXY3oKv8EQKw0QM2pCO7IiEba04sZdvEEjH2EsDftnIyJHhR1miU2hHtBAHDCRPwKVVo8CP1TrDfqwUVDuE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=G1Dfu5nx; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="G1Dfu5nx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1736334427; x=1767870427; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=KfteZbyV26PCsgidSMPbtLu3MzZ0qK03E76djIPw6lc=; b=G1Dfu5nx5/pCm+GRTKBZqntKWD4vJcwguEY8C7Jc6Rnhs6TMXkN6Fo7E Aub+QVY8gGDqXsMajGKGk7xcrnA7LU0JXAQFLFuCPQ95aEFE2zGUGgRPh oVDSeVEvMpkw0dFUWsrPK5ijEOVUZrtRngcqo0TywDh1I5JoJg5PJV8K2 yiYNdLLezIR371/7bWJrgUm+JGyNcYFGvVSY6d/975ZEtyyfbt3LEl6WC VHkqOjEh1SFtIWRWcVhn465PdVmy8TzIXDH6j+OvKBND/uYTKtT5qGdLx uDHiNFwWCTs+isaWkRa3RiGElmXm7AM6w1iIAVArk4Og7ZjEuuirYcdoY A==; X-CSE-ConnectionGUID: ll14yBe3R8mnyOYZBpQV9g== X-CSE-MsgGUID: raIhF/jpRde2bz2vxuBO4Q== X-IronPort-AV: E=McAfee;i="6700,10204,11308"; a="36437709" X-IronPort-AV: E=Sophos;i="6.12,298,1728975600"; d="scan'208";a="36437709" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jan 2025 03:07:06 -0800 X-CSE-ConnectionGUID: voMTk4fwS0yN6I6PUQIA2A== X-CSE-MsgGUID: cpSxP4hASJuqIUJpEAA6IQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,298,1728975600"; d="scan'208";a="103548158" Received: from lkp-server01.sh.intel.com (HELO d63d4d77d921) ([10.239.97.150]) by fmviesa010.fm.intel.com with ESMTP; 08 Jan 2025 03:07:01 -0800 Received: from kbuild by d63d4d77d921 with local (Exim 4.96) (envelope-from ) id 1tVTtq-000Fyd-2v; Wed, 08 Jan 2025 11:06:58 +0000 Date: Wed, 8 Jan 2025 19:06:44 +0800 From: kernel test robot To: Alexander Stein , Liu Ying , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Alexander Stein , dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/4] drm/bridge: imx8qxp-pxl2dpi: Use dev_err_probe Message-ID: <202501081822.A69smnpW-lkp@intel.com> References: <20250107143900.988567-2-alexander.stein@ew.tq-group.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250107143900.988567-2-alexander.stein@ew.tq-group.com> Hi Alexander, kernel test robot noticed the following build warnings: [auto build test WARNING on shawnguo/for-next] [also build test WARNING on linus/master v6.13-rc6 next-20250107] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Alexander-Stein/drm-bridge-imx8qxp-pxl2dpi-Use-dev_err_probe/20250107-224125 base: https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next patch link: https://lore.kernel.org/r/20250107143900.988567-2-alexander.stein%40ew.tq-group.com patch subject: [PATCH v2 1/4] drm/bridge: imx8qxp-pxl2dpi: Use dev_err_probe config: arm-randconfig-004-20250108 (https://download.01.org/0day-ci/archive/20250108/202501081822.A69smnpW-lkp@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250108/202501081822.A69smnpW-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202501081822.A69smnpW-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c:402:29: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] 402 | return dev_err_probe(dev, ret, "failed to get regmap\n"); | ^~~ drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c:394:9: note: initialize the variable 'ret' to silence this warning 394 | int ret; | ^ | = 0 1 warning generated. vim +/ret +402 drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c 388 389 static int imx8qxp_pxl2dpi_bridge_probe(struct platform_device *pdev) 390 { 391 struct imx8qxp_pxl2dpi *p2d; 392 struct device *dev = &pdev->dev; 393 struct device_node *np = dev->of_node; 394 int ret; 395 396 p2d = devm_kzalloc(dev, sizeof(*p2d), GFP_KERNEL); 397 if (!p2d) 398 return -ENOMEM; 399 400 p2d->regmap = syscon_node_to_regmap(np->parent); 401 if (IS_ERR(p2d->regmap)) > 402 return dev_err_probe(dev, ret, "failed to get regmap\n"); 403 404 ret = imx_scu_get_handle(&p2d->ipc_handle); 405 if (ret) 406 return dev_err_probe(dev, ret, "failed to get SCU ipc handle\n"); 407 408 p2d->dev = dev; 409 410 ret = of_property_read_u32(np, "fsl,sc-resource", &p2d->sc_resource); 411 if (ret) { 412 DRM_DEV_ERROR(dev, "failed to get SC resource %d\n", ret); 413 return ret; 414 } 415 416 p2d->next_bridge = imx8qxp_pxl2dpi_find_next_bridge(p2d); 417 if (IS_ERR(p2d->next_bridge)) 418 return dev_err_probe(dev, PTR_ERR(p2d->next_bridge), 419 "failed to find next bridge\n"); 420 421 ret = imx8qxp_pxl2dpi_set_pixel_link_sel(p2d); 422 if (ret) 423 return ret; 424 425 ret = imx8qxp_pxl2dpi_parse_dt_companion(p2d); 426 if (ret) 427 return ret; 428 429 platform_set_drvdata(pdev, p2d); 430 pm_runtime_enable(dev); 431 432 p2d->bridge.driver_private = p2d; 433 p2d->bridge.funcs = &imx8qxp_pxl2dpi_bridge_funcs; 434 p2d->bridge.of_node = np; 435 436 drm_bridge_add(&p2d->bridge); 437 438 return ret; 439 } 440 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki