linux-kernel - Re: [PATCH v3 3/5] mfd: add Khadas Edge 2 registers to khadas-mcu.

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Message-ID: <202510230921.N0ezsPtO-lkp@intel.com>
Date: Thu, 23 Oct 2025 10:03:17 +0800
From: kernel test robot <lkp@...el.com>
To: muhammed.efecetin.67@...il.com, linux-rockchip@...ts.infradead.org
Cc: oe-kbuild-all@...ts.linux.dev, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
	heiko@...ech.de, neil.armstrong@...aro.org, lee@...nel.org,
	rafael@...nel.org, efectn@...tonmail.com, daniel.lezcano@...aro.org
Subject: Re: [PATCH v3 3/5] mfd: add Khadas Edge 2 registers to khadas-mcu.

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on lee-mfd/for-mfd-next]
[also build test WARNING on lee-mfd/for-mfd-fixes rockchip/for-next rafael-pm/thermal linus/master v6.18-rc2 next-20251022]
[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/muhammed-efecetin-67-gmail-com/dt-bindings-mfd-khadas-mcu-add-new-compatible-for-Khadas-Edge-2/20251021-232554
base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
patch link:    https://lore.kernel.org/r/adbd6dd5e9ed938bab7927597b7f21eca3274b78.1761059314.git.efectn%40protonmail.com
patch subject: [PATCH v3 3/5] mfd: add Khadas Edge 2 registers to khadas-mcu.
config: x86_64-buildonly-randconfig-002-20251023 (https://download.01.org/0day-ci/archive/20251023/202510230921.N0ezsPtO-lkp@intel.com/config)
compiler: gcc-13 (Debian 13.3.0-16) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251023/202510230921.N0ezsPtO-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510230921.N0ezsPtO-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/mfd/khadas-mcu.c:103:35: warning: 'khadas_mcu_regmap_config_edge2' defined but not used [-Wunused-const-variable=]
     103 | static const struct regmap_config khadas_mcu_regmap_config_edge2 = {
         |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mfd/khadas-mcu.c:93:35: warning: 'khadas_mcu_regmap_config' defined but not used [-Wunused-const-variable=]
      93 | static const struct regmap_config khadas_mcu_regmap_config = {
         |                                   ^~~~~~~~~~~~~~~~~~~~~~~~

vim +/khadas_mcu_regmap_config_edge2 +103 drivers/mfd/khadas-mcu.c

    92	
  > 93	static const struct regmap_config khadas_mcu_regmap_config = {
    94		.reg_bits	= 8,
    95		.reg_stride	= 1,
    96		.val_bits	= 8,
    97		.max_register	= KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG,
    98		.volatile_reg	= khadas_mcu_reg_volatile,
    99		.writeable_reg	= khadas_mcu_reg_writeable,
   100		.cache_type	= REGCACHE_MAPLE,
   101	};
   102	
 > 103	static const struct regmap_config khadas_mcu_regmap_config_edge2 = {
   104		.reg_bits	= 8,
   105		.reg_stride	= 1,
   106		.val_bits	= 8,
   107		.max_register	= KHADAS_MCU_EDGE2_SYS_RST_REG,
   108		.volatile_reg	= khadas_mcu_reg_volatile_edge2,
   109		.writeable_reg	= khadas_mcu_reg_writeable_edge2,
   110		.cache_type	= REGCACHE_MAPLE,
   111	};
   112	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki