linux-kernel - Re: [PATCH [1/2]] iio: humidity: Add driver for ti HDC302x humidity sensors

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Date:   Fri, 17 Nov 2023 10:33:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     Li peiyu <579lpy@...il.com>, jic23@...nel.org, lars@...afoo.de,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org
Cc:     oe-kbuild-all@...ts.linux.dev, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Li peiyu <579lpy@...il.com>
Subject: Re: [PATCH [1/2]] iio: humidity: Add driver for ti HDC302x humidity
 sensors

Hi Li,

kernel test robot noticed the following build warnings:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.7-rc1 next-20231116]
[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/Li-peiyu/iio-humidity-Add-driver-for-ti-HDC302x-humidity-sensors/20231116-210050
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20231116125805.13466-1-579lpy%40gmail.com
patch subject: [PATCH [1/2]] iio: humidity: Add driver for ti HDC302x humidity sensors
config: x86_64-randconfig-r111-20231117 (https://download.01.org/0day-ci/archive/20231117/202311171052.IjyxJMuw-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231117/202311171052.IjyxJMuw-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/202311171052.IjyxJMuw-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/iio/humidity/hdc3020.c:23:10: sparse: sparse: symbol 'HDC3020_S_AUTO_10HZ_MOD0' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:25:10: sparse: sparse: symbol 'HDC3020_EXIT_AUTO' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:27:10: sparse: sparse: symbol 'HDC3020_R_T_RH_AUTO' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:28:10: sparse: sparse: symbol 'HDC3020_R_T_LOW_AUTO' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:29:10: sparse: sparse: symbol 'HDC3020_R_T_HIGH_AUTO' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:30:10: sparse: sparse: symbol 'HDC3020_R_RH_LOW_AUTO' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:31:10: sparse: sparse: symbol 'HDC3020_R_RH_HIGH_AUTO' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:33:10: sparse: sparse: symbol 'HDC3020_ENABLE_HEATER' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:34:10: sparse: sparse: symbol 'HDC3020_DISABLE_HEATER' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:36:10: sparse: sparse: symbol 'HDC3020_HEATER_FULL' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:37:10: sparse: sparse: symbol 'HDC3020_HEATER_HALF' was not declared. Should it be static?
>> drivers/iio/humidity/hdc3020.c:38:10: sparse: sparse: symbol 'HDC3020_HEATER_QUARTER' was not declared. Should it be static?

vim +/HDC3020_S_AUTO_10HZ_MOD0 +23 drivers/iio/humidity/hdc3020.c

    22	
  > 23	const u8 HDC3020_S_AUTO_10HZ_MOD0[2] = { 0x27, 0x37 };
    24	
  > 25	const u8 HDC3020_EXIT_AUTO[2] = { 0x30, 0x93 };
    26	
  > 27	const u8 HDC3020_R_T_RH_AUTO[2] = { 0xE0, 0x00 };
  > 28	const u8 HDC3020_R_T_LOW_AUTO[2] = { 0xE0, 0x02 };
  > 29	const u8 HDC3020_R_T_HIGH_AUTO[2] = { 0xE0, 0x03 };
  > 30	const u8 HDC3020_R_RH_LOW_AUTO[2] = { 0xE0, 0x04 };
  > 31	const u8 HDC3020_R_RH_HIGH_AUTO[2] = { 0xE0, 0x05 };
    32	
  > 33	const u8 HDC3020_ENABLE_HEATER[2] = { 0x30, 0x6D };
  > 34	const u8 HDC3020_DISABLE_HEATER[2] = { 0x30, 0x66 };
    35	
  > 36	const u8 HDC3020_HEATER_FULL[5] = { 0x30, 0x6E, 0x3F, 0xFF, 0x06 };
  > 37	const u8 HDC3020_HEATER_HALF[5] = { 0x30, 0x6E, 0x03, 0xFF, 0x00 };
  > 38	const u8 HDC3020_HEATER_QUARTER[5] = { 0x30, 0x6E, 0x00, 0x9F, 0x96 };
    39	

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