drivers/hwmon/aspeed-pwm-tacho.c:337:21: error: variable 'aspeed_pwm_tacho_regmap_config' has initializer but incomplete type

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c86daad2c25bfd4a33d48b7691afaa96d9c5ab46
commit: 2d7a548a3eff382da5cd743670693b7657327714 drivers: hwmon: Support for ASPEED PWM/Fan tach
date:   7 weeks ago
config: x86_64-randconfig-n0-05271314 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        git checkout 2d7a548a3eff382da5cd743670693b7657327714
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

>> drivers/hwmon/aspeed-pwm-tacho.c:337:21: error: variable 'aspeed_pwm_tacho_regmap_config' has initializer but incomplete type
    static const struct regmap_config aspeed_pwm_tacho_regmap_config = {
                        ^
>> drivers/hwmon/aspeed-pwm-tacho.c:338:2: error: unknown field 'reg_bits' specified in initializer
     .reg_bits = 32,
     ^
>> drivers/hwmon/aspeed-pwm-tacho.c:338:2: warning: excess elements in struct initializer [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c:338:2: warning: (near initialization for 'aspeed_pwm_tacho_regmap_config') [enabled by default]
>> drivers/hwmon/aspeed-pwm-tacho.c:339:2: error: unknown field 'val_bits' specified in initializer
     .val_bits = 32,
     ^
   drivers/hwmon/aspeed-pwm-tacho.c:339:2: warning: excess elements in struct initializer [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c:339:2: warning: (near initialization for 'aspeed_pwm_tacho_regmap_config') [enabled by default]
>> drivers/hwmon/aspeed-pwm-tacho.c:340:2: error: unknown field 'reg_stride' specified in initializer
     .reg_stride = 4,
     ^
   drivers/hwmon/aspeed-pwm-tacho.c:340:2: warning: excess elements in struct initializer [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c:340:2: warning: (near initialization for 'aspeed_pwm_tacho_regmap_config') [enabled by default]
>> drivers/hwmon/aspeed-pwm-tacho.c:341:2: error: unknown field 'max_register' specified in initializer
     .max_register = ASPEED_PTCR_TYPEO_LIMIT,
     ^
   drivers/hwmon/aspeed-pwm-tacho.c:341:2: warning: excess elements in struct initializer [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c:341:2: warning: (near initialization for 'aspeed_pwm_tacho_regmap_config') [enabled by default]
>> drivers/hwmon/aspeed-pwm-tacho.c:342:2: error: unknown field 'reg_write' specified in initializer
     .reg_write = regmap_aspeed_pwm_tacho_reg_write,
     ^
   drivers/hwmon/aspeed-pwm-tacho.c:342:2: warning: excess elements in struct initializer [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c:342:2: warning: (near initialization for 'aspeed_pwm_tacho_regmap_config') [enabled by default]
>> drivers/hwmon/aspeed-pwm-tacho.c:343:2: error: unknown field 'reg_read' specified in initializer
     .reg_read = regmap_aspeed_pwm_tacho_reg_read,
     ^
   drivers/hwmon/aspeed-pwm-tacho.c:343:2: warning: excess elements in struct initializer [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c:343:2: warning: (near initialization for 'aspeed_pwm_tacho_regmap_config') [enabled by default]
>> drivers/hwmon/aspeed-pwm-tacho.c:344:2: error: unknown field 'fast_io' specified in initializer
     .fast_io = true,
     ^
   drivers/hwmon/aspeed-pwm-tacho.c:344:2: warning: excess elements in struct initializer [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c:344:2: warning: (near initialization for 'aspeed_pwm_tacho_regmap_config') [enabled by default]
   drivers/hwmon/aspeed-pwm-tacho.c: In function 'aspeed_pwm_tacho_probe':
>> drivers/hwmon/aspeed-pwm-tacho.c:783:2: error: implicit declaration of function 'devm_regmap_init' [-Werror=implicit-function-declaration]
     priv->regmap = devm_regmap_init(dev, NULL, (__force void *)regs,
     ^
>> drivers/hwmon/aspeed-pwm-tacho.c:783:15: warning: assignment makes pointer from integer without a cast [enabled by default]
     priv->regmap = devm_regmap_init(dev, NULL, (__force void *)regs,
                  ^
   cc1: some warnings being treated as errors

vim +/aspeed_pwm_tacho_regmap_config +337 drivers/hwmon/aspeed-pwm-tacho.c

   331		void __iomem *regs = (void __iomem *)context;
   332	
   333		*val = readl(regs + reg);
   334		return 0;
   335	}
   336	
 > 337	static const struct regmap_config aspeed_pwm_tacho_regmap_config = {
 > 338		.reg_bits = 32,
 > 339		.val_bits = 32,
 > 340		.reg_stride = 4,
 > 341		.max_register = ASPEED_PTCR_TYPEO_LIMIT,
 > 342		.reg_write = regmap_aspeed_pwm_tacho_reg_write,
 > 343		.reg_read = regmap_aspeed_pwm_tacho_reg_read,
 > 344		.fast_io = true,
   345	};
   346	
   347	static void aspeed_set_clock_enable(struct regmap *regmap, bool val)

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