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

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Message-ID: <202510221512.9Ji8w2KZ-lkp@intel.com>
Date: Wed, 22 Oct 2025 15:18:28 +0800
From: kernel test robot <lkp@...el.com>
To: muhammed.efecetin.67@...il.com, linux-rockchip@...ts.infradead.org
Cc: llvm@...ts.linux.dev, 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: i386-buildonly-randconfig-002-20251022 (https://download.01.org/0day-ci/archive/20251022/202510221512.9Ji8w2KZ-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251022/202510221512.9Ji8w2KZ-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/202510221512.9Ji8w2KZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/mfd/khadas-mcu.c:93:35: warning: unused variable 'khadas_mcu_regmap_config' [-Wunused-const-variable]
      93 | static const struct regmap_config khadas_mcu_regmap_config = {
         |                                   ^~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mfd/khadas-mcu.c:103:35: warning: unused variable 'khadas_mcu_regmap_config_edge2' [-Wunused-const-variable]
     103 | static const struct regmap_config khadas_mcu_regmap_config_edge2 = {
         |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   2 warnings generated.

vim +/khadas_mcu_regmap_config +93 drivers/mfd/khadas-mcu.c

54c97b83897fb1 Muhammed Efe Cetin 2025-10-21   92  
6c27219e349116 Neil Armstrong     2020-06-08  @93  static const struct regmap_config khadas_mcu_regmap_config = {
6c27219e349116 Neil Armstrong     2020-06-08   94  	.reg_bits	= 8,
6c27219e349116 Neil Armstrong     2020-06-08   95  	.reg_stride	= 1,
6c27219e349116 Neil Armstrong     2020-06-08   96  	.val_bits	= 8,
6c27219e349116 Neil Armstrong     2020-06-08   97  	.max_register	= KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG,
6c27219e349116 Neil Armstrong     2020-06-08   98  	.volatile_reg	= khadas_mcu_reg_volatile,
6c27219e349116 Neil Armstrong     2020-06-08   99  	.writeable_reg	= khadas_mcu_reg_writeable,
14100f8e58564d Bo Liu             2024-02-06  100  	.cache_type	= REGCACHE_MAPLE,
6c27219e349116 Neil Armstrong     2020-06-08  101  };
6c27219e349116 Neil Armstrong     2020-06-08  102  
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21 @103  static const struct regmap_config khadas_mcu_regmap_config_edge2 = {
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  104  	.reg_bits	= 8,
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  105  	.reg_stride	= 1,
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  106  	.val_bits	= 8,
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  107  	.max_register	= KHADAS_MCU_EDGE2_SYS_RST_REG,
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  108  	.volatile_reg	= khadas_mcu_reg_volatile_edge2,
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  109  	.writeable_reg	= khadas_mcu_reg_writeable_edge2,
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  110  	.cache_type	= REGCACHE_MAPLE,
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  111  };
54c97b83897fb1 Muhammed Efe Cetin 2025-10-21  112  

-- 
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