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X-CSE-ConnectionGUID: LOdfaLAFTU6gUf6AN4iVVQ== X-CSE-MsgGUID: 9lMq5+Y5SyKIAcxUB0K3Lg== X-IronPort-AV: E=McAfee;i="6700,10204,11317"; a="37778477" X-IronPort-AV: E=Sophos;i="6.13,212,1732608000"; d="scan'208";a="37778477" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jan 2025 03:04:31 -0800 X-CSE-ConnectionGUID: ExlJaJBFRG6Ud7aN/hExzw== X-CSE-MsgGUID: caxrbGchQde3DQDs9c8hdQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,199,1725346800"; d="scan'208";a="110777656" Received: from lkp-server01.sh.intel.com (HELO d63d4d77d921) ([10.239.97.150]) by orviesa003.jf.intel.com with ESMTP; 17 Jan 2025 03:04:27 -0800 Received: from kbuild by d63d4d77d921 with local (Exim 4.96) (envelope-from ) id 1tYk9I-000T6J-1L; Fri, 17 Jan 2025 11:04:24 +0000 Date: Fri, 17 Jan 2025 19:03:53 +0800 From: kernel test robot To: Pengyu Luo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Hans de Goede , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , Bryan O'Donoghue , Jean Delvare , Guenter Roeck Cc: oe-kbuild-all@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-hwmon@vger.kernel.org, Pengyu Luo Subject: Re: [PATCH v4 2/3] platform: arm64: add Huawei Matebook E Go EC driver Message-ID: <202501171826.NGZwFrgW-lkp@intel.com> References: <20250116111559.83641-3-mitltlatltl@gmail.com> Precedence: bulk X-Mailing-List: linux-arm-msm@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: <20250116111559.83641-3-mitltlatltl@gmail.com> Hi Pengyu, kernel test robot noticed the following build warnings: [auto build test WARNING on b323d8e7bc03d27dec646bfdccb7d1a92411f189] url: https://github.com/intel-lab-lkp/linux/commits/Pengyu-Luo/dt-bindings-platform-Add-Huawei-Matebook-E-Go-EC/20250116-192206 base: b323d8e7bc03d27dec646bfdccb7d1a92411f189 patch link: https://lore.kernel.org/r/20250116111559.83641-3-mitltlatltl%40gmail.com patch subject: [PATCH v4 2/3] platform: arm64: add Huawei Matebook E Go EC driver config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20250117/202501171826.NGZwFrgW-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250117/202501171826.NGZwFrgW-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/202501171826.NGZwFrgW-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/platform/arm64/huawei-gaokun-ec.c: In function 'extr_resp_shallow': >> drivers/platform/arm64/huawei-gaokun-ec.c:91:20: warning: return discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 91 | return src + RESP_HDR_SIZE; | ^ drivers/platform/arm64/huawei-gaokun-ec.c: In function 'gaokun_ec_request': >> drivers/platform/arm64/huawei-gaokun-ec.c:112:32: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 112 | .buf = req, | ^~~ vim +/const +91 drivers/platform/arm64/huawei-gaokun-ec.c 88 89 static inline void *extr_resp_shallow(const u8 *src) 90 { > 91 return src + RESP_HDR_SIZE; 92 } 93 94 struct gaokun_ec { 95 struct i2c_client *client; 96 struct mutex lock; /* EC transaction lock */ 97 struct blocking_notifier_head notifier_list; 98 struct device *hwmon_dev; 99 struct input_dev *idev; 100 bool suspended; 101 }; 102 103 static int gaokun_ec_request(struct gaokun_ec *ec, const u8 *req, 104 size_t resp_len, u8 *resp) 105 { 106 struct i2c_client *client = ec->client; 107 struct i2c_msg msgs[2] = { 108 { 109 .addr = client->addr, 110 .flags = client->flags, 111 .len = REQ_LEN(req), > 112 .buf = req, 113 }, { 114 .addr = client->addr, 115 .flags = client->flags | I2C_M_RD, 116 .len = resp_len, 117 .buf = resp, 118 }, 119 }; 120 121 guard(mutex)(&ec->lock); 122 i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 123 usleep_range(2000, 2500); /* have a break, ACPI did this */ 124 125 return *resp ? -EIO : 0; 126 } 127 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki