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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A52F2C77B75 for ; Tue, 18 Apr 2023 05:20:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UGJjQEyLQdj+FDhmu+0d8gnfGx5CqNOG4zYqiX2VnlM=; b=A9JLMzOJRJCSIZ gJyphkP29+muuPqjoqkHiipQamIVlWU9+huPkjXD23+A2Kuhw225rUE1J9aT+5TxxAFXAcYtR5z5z P6Oxi1Ly94gNdsw1fm+z76ph5k2NIgc1A83NCnTKmYKwWVpmQ2HOa8mVcqiD+B+V4J6k/w0MxhF48 4iDG3nYcdemAiJaOFyTHPXe4PJdDzghjPoRKaMs3DhIsxaPI5+fCrPm4aGeLt/LaPBF9hKRZoFajw rOSq3Tx2bOa03Ume0fPdqd5ZTG6JV+O9+6HDM4xfWm/IJeDTNyHg1kPEZkcnl+FPdeE+mog09x6zw zIs/EZ+a5+iTl4UJtOUg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1podka-000tPu-18; Tue, 18 Apr 2023 05:19:32 +0000 Received: from mga17.intel.com ([192.55.52.151]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1podkX-000tOp-1i for linux-arm-kernel@lists.infradead.org; Tue, 18 Apr 2023 05:19:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681795169; x=1713331169; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=ApemhVgsU+TFdPtwqGDQRyH9z/W8/lC9uWid1us00p8=; b=Dkt3jszhmDsvi3Ort46mCaXnVAUxfoLtkR87ujIWygNgb9e9BEJxCqqm 8s1AqcsrFYEATIqYIcrZ4HY0SrAMglbeY1ee+tYMH5LYqfyQhggSXbgmr N5hJFj3lGWyrT6pf9VSYw7bwRvUCXMNdyFHrG7Dafp9jgiSbD95feYUoI LdGKwk0S7+8S7N/K5hoBTWnZtcEseBV23vJsNz4g8G3NpjtC1/CPwXVKo cABWdVwrONzw6wZrzRHPmrsLFZ5G8v8TJ7ObJ316g9X3O/CFloUglK53z WohSw3vDIzJ9zmRngJCISwnm5GWoL7TCHROz8HAEkfL6Uczzipbcr84fG g==; X-IronPort-AV: E=McAfee;i="6600,9927,10683"; a="325417318" X-IronPort-AV: E=Sophos;i="5.99,206,1677571200"; d="scan'208";a="325417318" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2023 22:19:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10683"; a="815071972" X-IronPort-AV: E=Sophos;i="5.99,206,1677571200"; d="scan'208";a="815071972" Received: from lkp-server01.sh.intel.com (HELO b613635ddfff) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 17 Apr 2023 22:19:22 -0700 Received: from kbuild by b613635ddfff with local (Exim 4.96) (envelope-from ) id 1podkP-000d1P-1u; Tue, 18 Apr 2023 05:19:21 +0000 Date: Tue, 18 Apr 2023 13:18:22 +0800 From: kernel test robot To: Souradeep Chowdhury , Andy Gross , Konrad Dybcio , Krzysztof Kozlowski , Bjorn Andersson , Rob Herring , Alex Elder , Arnd Bergmann , Greg Kroah-Hartman Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, Sibi Sankar , Rajendra Nayak , Souradeep Chowdhury Subject: Re: [PATCH V1 2/3] drivers: misc: dcc: Add driver support for Data Capture and Compare unit(DCC) Message-ID: <202304181327.0grVYsHS-lkp@intel.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230417_221929_584509_51BE8168 X-CRM114-Status: GOOD ( 15.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Souradeep, kernel test robot noticed the following build warnings: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.3-rc7 next-20230417] [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/Souradeep-Chowdhury/dt-bindings-misc-qcom-dcc-Add-the-dtschema/20230414-220304 patch link: https://lore.kernel.org/r/b1a9cbbcfefe133cc9047a71a2acdaa74239df29.1681480351.git.quic_schowdhu%40quicinc.com patch subject: [PATCH V1 2/3] drivers: misc: dcc: Add driver support for Data Capture and Compare unit(DCC) config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20230418/202304181327.0grVYsHS-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 9638da200e00bd069e6dd63604e14cbafede9324) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/f3f73f6008e1ebca6fba848e260b1f938d91be95 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Souradeep-Chowdhury/dt-bindings-misc-qcom-dcc-Add-the-dtschema/20230414-220304 git checkout f3f73f6008e1ebca6fba848e260b1f938d91be95 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/misc/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202304181327.0grVYsHS-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/misc/dcc.c:217:14: warning: variable 'ret' is used uninitialized whenever 'for' loop exits because its condition is false [-Wsometimes-uninitialized] for (i = 0; i < drvdata->nr_link_list; i++) { ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/dcc.c:238:9: note: uninitialized use occurs here return ret; ^~~ drivers/misc/dcc.c:217:14: note: remove the condition if it is always true for (i = 0; i < drvdata->nr_link_list; i++) { ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/dcc.c:190:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +217 drivers/misc/dcc.c 186 187 static int dcc_sw_trigger(struct dcc_drvdata *drvdata) 188 { 189 void __iomem *addr; 190 int ret; 191 int i; 192 u32 status; 193 u32 ll_cfg; 194 u32 tmp_ll_cfg; 195 u32 val; 196 197 mutex_lock(&drvdata->mutex); 198 199 for (i = 0; i < drvdata->nr_link_list; i++) { 200 if (!test_bit(i, drvdata->enable_bitmap)) 201 continue; 202 ll_cfg = dcc_list_readl(drvdata, i, DCC_LL_CFG); 203 tmp_ll_cfg = ll_cfg & ~DCC_TRIGGER_MASK; 204 dcc_list_writel(drvdata, tmp_ll_cfg, i, DCC_LL_CFG); 205 dcc_list_writel(drvdata, 1, i, DCC_LL_SW_TRIGGER); 206 dcc_list_writel(drvdata, ll_cfg, i, DCC_LL_CFG); 207 } 208 209 addr = drvdata->base + DCC_STATUS(drvdata->mem_map_ver); 210 if (readl_poll_timeout(addr, val, !FIELD_GET(DCC_STATUS_MASK, val), 211 1, STATUS_READY_TIMEOUT)) { 212 dev_err(drvdata->dev, "DCC is busy after receiving sw trigger\n"); 213 ret = -EBUSY; 214 goto out_unlock; 215 } 216 > 217 for (i = 0; i < drvdata->nr_link_list; i++) { 218 if (!test_bit(i, drvdata->enable_bitmap)) 219 continue; 220 221 status = dcc_list_readl(drvdata, i, DCC_LL_BUS_ACCESS_STATUS); 222 if (!status) 223 continue; 224 225 dev_err(drvdata->dev, "Read access error for list %d err: 0x%x\n", 226 i, status); 227 ll_cfg = dcc_list_readl(drvdata, i, DCC_LL_CFG); 228 tmp_ll_cfg = ll_cfg & ~DCC_TRIGGER_MASK; 229 dcc_list_writel(drvdata, tmp_ll_cfg, i, DCC_LL_CFG); 230 dcc_list_writel(drvdata, DCC_STATUS_MASK, i, DCC_LL_BUS_ACCESS_STATUS); 231 dcc_list_writel(drvdata, ll_cfg, i, DCC_LL_CFG); 232 ret = -ENODATA; 233 break; 234 } 235 236 out_unlock: 237 mutex_unlock(&drvdata->mutex); 238 return ret; 239 } 240 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel