Re: [PATCH] iio: light: tsl2772: fix reading proximity-diodes from device tree

[Brian Masney <bmasney@redhat.com>]

Hi kernel test robot maintainers,

On Tue, Apr 04, 2023 at 03:13:24PM +0800, kernel test robot wrote:
> Hi Brian,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on jic23-iio/togreg]
> [also build test ERROR on linus/master v6.3-rc5 next-20230403]
> [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/Brian-Masney/iio-light-tsl2772-fix-reading-proximity-diodes-from-device-tree/20230404-091630
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
> patch link:    https://lore.kernel.org/r/20230404011455.339454-1-bmasney%40redhat.com
> patch subject: [PATCH] iio: light: tsl2772: fix reading proximity-diodes from device tree
> config: x86_64-randconfig-a001-20230403 (https://download.01.org/0day-ci/archive/20230404/202304041451.gj8oasQp-lkp@intel.com/config)
> compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
> 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/9701bd10d6409568197894b603f8a1e23280e82b
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Brian-Masney/iio-light-tsl2772-fix-reading-proximity-diodes-from-device-tree/20230404-091630
>         git checkout 9701bd10d6409568197894b603f8a1e23280e82b
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/iio/light/
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
> | Link: https://lore.kernel.org/oe-kbuild-all/202304041451.gj8oasQp-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> drivers/iio/light/tsl2772.c:599:30: error: use of undeclared identifier 'prox_diode_mask'; did you mean 'protnone_mask'?
>            chip->settings.prox_diode = prox_diode_mask;
>                                        ^~~~~~~~~~~~~~~
>                                        protnone_mask
>    arch/x86/include/asm/pgtable-invert.h:22:19: note: 'protnone_mask' declared here
>    static inline u64 protnone_mask(u64 val)
>                      ^
>    1 error generated.
> 
> 
> vim +599 drivers/iio/light/tsl2772.c
> 
>    572	
>    573	static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
>    574	{
>    575		struct device *dev = &chip->client->dev;
>    576		int i, ret, num_leds;
>    577		u32 leds[TSL2772_MAX_PROX_LEDS];
>    578	
>    579		ret = device_property_count_u32(dev, "amstaos,proximity-diodes");
>    580		if (ret < 0)
>    581			return ret;
>    582	
>    583		num_leds = ret;
>    584		if (num_leds > TSL2772_MAX_PROX_LEDS)
>    585			num_leds = TSL2772_MAX_PROX_LEDS;
>    586	
>    587		ret = device_property_read_u32_array(dev, "amstaos,proximity-diodes", leds, num_leds);
>    588		if (ret < 0) {
>    589			dev_err(dev, "Invalid value for amstaos,proximity-diodes: %d.\n", ret);
>    590			return ret;
>    591		}
>    592	
>    593		for (i = 0; i < num_leds; i++) {
>    594			if (leds[i] > 1) {
>    595				dev_err(dev, "Invalid value %d in amstaos,proximity-diodes.\n", leds[i]);
>    596				return -EINVAL;
>    597			}
>    598		}
>  > 599		chip->settings.prox_diode = prox_diode_mask;
>    600	
>    601		return 0;
>    602	}
>    603	

This doesn't contain the code that's in iio/togreg [1], and that's why
the build failed. I originally developed / built this against
next-20230330. I just checked linus/master, next-20230404, iio/testing,
and all have the expected code that defines prox_diode_mask.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git/tree/drivers/iio/light/tsl2772.c?h=togreg#n593

Brian