Re: [PATCH v1 1/2] Add the iio driver for bosch pressure sensor bmp390. The bmp390 is a pressure sensor module. It will support SPI and I2C protocol based on configuration.

[kernel test robot]

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.16-rc2 next-20250620]
[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/liquancin-mereenamathai-in-bosch-com/Add-the-iio-driver-for-bosch-pressure-sensor-bmp390-The-bmp390-is-a-pressure-sensor-module-It-will-support-SPI-and-I2C-p/20250620-125832
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20250620045456.1151-2-liquancin.mereenamathai%40in.bosch.com
patch subject: [PATCH v1 1/2] Add the iio driver for bosch pressure sensor bmp390. The bmp390 is a pressure sensor module. It will support SPI and I2C protocol based on configuration.
config: loongarch-randconfig-r122-20250621 (https://download.01.org/0day-ci/archive/20250621/202506211617.KOMMf9eA-lkp@xxxxxxxxx/config)
compiler: loongarch64-linux-gcc (GCC) 15.1.0
reproduce: (https://download.01.org/0day-ci/archive/20250621/202506211617.KOMMf9eA-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506211617.KOMMf9eA-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> drivers/iio/pressure/bmp390/bmp390_i2c.c:38:16: sparse: sparse: symbol 'iio_i2c_dev' was not declared. Should it be static?
--
>> drivers/iio/pressure/bmp390/bmp390_iio_buffer.c:41:56: sparse: sparse: dereference of noderef expression
>> drivers/iio/pressure/bmp390/bmp390_iio_buffer.c:41:56: sparse: sparse: dereference of noderef expression
   drivers/iio/pressure/bmp390/bmp390_iio_buffer.c:44:40: sparse: sparse: dereference of noderef expression
   drivers/iio/pressure/bmp390/bmp390_iio_buffer.c:44:40: sparse: sparse: dereference of noderef expression
   drivers/iio/pressure/bmp390/bmp390_iio_buffer.c:47:43: sparse: sparse: dereference of noderef expression
   drivers/iio/pressure/bmp390/bmp390_iio_buffer.c:47:43: sparse: sparse: dereference of noderef expression

vim +/iio_i2c_dev +38 drivers/iio/pressure/bmp390/bmp390_i2c.c

    33	
    34	/*********************************************************************/
    35	/* global variables */
    36	/*********************************************************************/
    37	static struct i2c_client *bmp3_i2c_client;
  > 38	struct iio_dev *iio_i2c_dev;
    39	

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