From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (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 81DCC28136C for ; Wed, 24 Sep 2025 09:08:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758704932; cv=none; b=arovsUqo5jlUu/3yu0Cv33TDBN3XDQFKB+3zOSLrJ8OGpKssi44syYjg5VtXJ9tA9Q+U8xSGJ3jHUdZJTMEYGbrzD8S8u+SFSb9/OCg05IbxVlW6Bs9wFS+rM9A5JbRqhu/UQkTJFcj9oY/8l5BaL3AsGxtRbdxZm7pqHmxiUM4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758704932; c=relaxed/simple; bh=1MgvMv9h0OriM8gy/nKKNmpK7QrgpGGKXgdUP3eVUDc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qzRI+oXOLW4UzxsKYy5n4kocJv9k0HfzbS4qCdiVdkRPa8Q4kU/SdwADBYNtB4K4V0rWvZ046RUI96vnelJ4sfPWMG7+B2xKazncKteIK89m1zBVgsVbyeQ6XQtsGE/DtFYbTceLi8FXHjWLyJc6EvgOnezLx9pd38l2krNxID0= 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=K1313W5G; arc=none smtp.client-ip=198.175.65.18 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="K1313W5G" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758704930; x=1790240930; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=1MgvMv9h0OriM8gy/nKKNmpK7QrgpGGKXgdUP3eVUDc=; b=K1313W5GT+BAR4kGlbj5nn4z/0SocqPe0rZgehkZx64WLdDRigH0WUWH WReTE7jIq3w2+GYoKuKcIMPpV/q9dOXK+/KYMc7xMsR5pV9u3XcpbNAW8 TwNAJUTXNz9bmhpE9nLWODg+eVVbDQmoyXSy0FtqWdbUi56fC1Snm/8X3 /gwXLaoiTWmHMDN30Yu1Wlxvm26FyDDAQLOK3g0F1O7J8QuMOoF2bc/1z RJBmWfFF9rUPgxh4DoGHIk6MPfTLuJRklJ+xCq+pUIxWKWNpaK3IznsNQ Vh/71pgjJgklXdXRfxIOi2F8XyQ5jTvtYB1SOI/K5mXaw/LNO/Gq1NMmQ Q==; X-CSE-ConnectionGUID: aqJQGeciQPqP9UsDtdcDYA== X-CSE-MsgGUID: r2Q/6aLvQZyoL38dPuesgw== X-IronPort-AV: E=McAfee;i="6800,10657,11531"; a="61049644" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="61049644" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2025 02:08:50 -0700 X-CSE-ConnectionGUID: gSc+gX5rSHiKkn8wJCBsQg== X-CSE-MsgGUID: flb32M3vRO6n+Dq+IpWMGw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,290,1751266800"; d="scan'208";a="182266182" Received: from lkp-server02.sh.intel.com (HELO 84c55410ccf6) ([10.239.97.151]) by fmviesa004.fm.intel.com with ESMTP; 24 Sep 2025 02:08:45 -0700 Received: from kbuild by 84c55410ccf6 with local (Exim 4.96) (envelope-from ) id 1v1LUR-0003y9-1T; Wed, 24 Sep 2025 09:08:43 +0000 Date: Wed, 24 Sep 2025 17:08:23 +0800 From: kernel test robot To: Yongbang Shi , xinliang.liu@linaro.org, tiantao6@hisilicon.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, kong.kongxinwei@hisilicon.com, dmitry.baryshkov@oss.qualcomm.com Cc: oe-kbuild-all@lists.linux.dev, liangjian010@huawei.com, chenjianmin@huawei.com, fengsheng5@huawei.com, shiyongbang@huawei.com, libaihan@huawei.com, shenjian15@huawei.com, shaojijie@huawei.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v7 drm-dp 1/4] drm/hisilicon/hibmc: fix dp probabilistical detect errors after HPD irq Message-ID: <202509241625.o4mNleVb-lkp@intel.com> References: <20250923130411.2522339-2-shiyongbang@huawei.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: <20250923130411.2522339-2-shiyongbang@huawei.com> Hi Yongbang, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on linus/master v6.17-rc7 next-20250923] [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/Yongbang-Shi/drm-hisilicon-hibmc-fix-dp-probabilistical-detect-errors-after-HPD-irq/20250923-211652 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20250923130411.2522339-2-shiyongbang%40huawei.com patch subject: [PATCH v7 drm-dp 1/4] drm/hisilicon/hibmc: fix dp probabilistical detect errors after HPD irq config: s390-randconfig-001-20250924 (https://download.01.org/0day-ci/archive/20250924/202509241625.o4mNleVb-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250924/202509241625.o4mNleVb-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/202509241625.o4mNleVb-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c: In function 'hibmc_dp_detect': >> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c:61:18: warning: array subscript 128 is above array bounds of 'u8[15]' {aka 'unsigned char[15]'} [-Warray-bounds] dp_dev->dpcd[DP_DOWNSTREAM_PORT_0] & DP_DS_PORT_HPD) { ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ vim +61 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c 34 35 static int hibmc_dp_detect(struct drm_connector *connector, 36 struct drm_modeset_acquire_ctx *ctx, bool force) 37 { 38 struct hibmc_dp *dp = to_hibmc_dp(connector); 39 struct hibmc_dp_dev *dp_dev = dp->dp_dev; 40 int ret; 41 42 if (dp->irq_status) { 43 if (dp_dev->hpd_status != HIBMC_HPD_IN) 44 return connector_status_disconnected; 45 } 46 47 ret = drm_dp_read_dpcd_caps(dp_dev->aux, dp_dev->dpcd); 48 if (ret) 49 return connector_status_disconnected; 50 51 dp_dev->is_branch = drm_dp_is_branch(dp_dev->dpcd); 52 53 ret = drm_dp_read_desc(dp_dev->aux, &dp_dev->desc, dp_dev->is_branch); 54 if (ret) 55 return connector_status_disconnected; 56 57 if (!dp_dev->is_branch) 58 return connector_status_connected; 59 60 if (drm_dp_read_sink_count_cap(connector, dp_dev->dpcd, &dp_dev->desc) && > 61 dp_dev->dpcd[DP_DOWNSTREAM_PORT_0] & DP_DS_PORT_HPD) { 62 ret = drm_dp_read_sink_count(dp_dev->aux); 63 if (ret > 0) 64 return connector_status_connected; 65 } 66 67 return connector_status_disconnected; 68 } 69 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki