linux-kernel - Re: [PATCH v1 2/2] iio: adc: adding support for pac193x

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Date:   Tue, 21 Feb 2023 04:04:46 +0800
From:   kernel test robot <lkp@...el.com>
To:     marius.cristea@...rochip.com, jic23@...nel.org, lars@...afoo.de,
        robh+dt@...nel.org
Cc:     oe-kbuild-all@...ts.linux.dev, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        marius.cristea@...rochip.com
Subject: Re: [PATCH v1 2/2] iio: adc: adding support for pac193x

Hi,

I love your patch! Perhaps something to improve:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.2 next-20230220]
[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/marius-cristea-microchip-com/dt-bindings-iio-adc-adding-dt-bindings-for-PAC193X/20230220-203540
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20230220123232.413029-3-marius.cristea%40microchip.com
patch subject: [PATCH v1 2/2] iio: adc: adding support for pac193x
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20230221/202302210331.iKaMm4co-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/fd3be916ffe18735a98bdc55ccc0cb5f3097582c
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review marius-cristea-microchip-com/dt-bindings-iio-adc-adding-dt-bindings-for-PAC193X/20230220-203540
        git checkout fd3be916ffe18735a98bdc55ccc0cb5f3097582c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/iio/adc/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302210331.iKaMm4co-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/iio/adc/pac193x.c: In function 'pac193x_acpi_get_acpi_match_entry':
>> drivers/iio/adc/pac193x.c:1402:21: warning: variable 'status' set but not used [-Wunused-but-set-variable]
    1402 |         acpi_status status;
         |                     ^~~~~~


vim +/status +1402 drivers/iio/adc/pac193x.c

  1399	
  1400	static char *pac193x_acpi_get_acpi_match_entry(acpi_handle handle)
  1401	{
> 1402		acpi_status status;
  1403		union acpi_object *name_object;
  1404		struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
  1405	
  1406		status = acpi_evaluate_object(handle, "_HID", NULL, &buffer);
  1407		name_object = buffer.pointer;
  1408	
  1409		return name_object->string.pointer;
  1410	}
  1411	

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