Hi Oleksij,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linux/master]
[also build test WARNING on linus/master v5.12-rc2]
[cannot apply to iio/togreg]
[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]

url:    https://github.com/0day-ci/linux/commits/Oleksij-Rempel/mainline-ti-tsc2046-adc-driver/20210312-185657
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git a74e6a014c9d4d4161061f770c9b4f98372ac778
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/7c34f2cd7f0176071b53152c6065f6d5a078463b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Oleksij-Rempel/mainline-ti-tsc2046-adc-driver/20210312-185657
        git checkout 7c34f2cd7f0176071b53152c6065f6d5a078463b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

   In file included from include/linux/device.h:15,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from include/linux/cacheinfo.h:6,
                    from arch/riscv/include/asm/cacheinfo.h:9,
                    from arch/riscv/include/asm/elf.h:14,
                    from include/linux/elf.h:6,
                    from include/linux/module.h:18,
                    from drivers/iio/adc/ti-tsc2046.c:10:
   drivers/iio/adc/ti-tsc2046.c: In function 'tsc2046_adc_parse_fwnode':

quoted

drivers/iio/adc/ti-tsc2046.c:579:17: warning: format '%i' expects argument of type 'int', but argument 5 has type 'long unsigned int' [-Wformat=]

     579 |    dev_err(dev, "%pfw: Unsupported reg value: %i, max supported is: %i.\n",
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:19:22: note: in definition of macro 'dev_fmt'
      19 | #define dev_fmt(fmt) fmt
         |                      ^~~
   drivers/iio/adc/ti-tsc2046.c:579:4: note: in expansion of macro 'dev_err'
     579 |    dev_err(dev, "%pfw: Unsupported reg value: %i, max supported is: %i.\n",
         |    ^~~~~~~
   drivers/iio/adc/ti-tsc2046.c:579:70: note: format string is defined here
     579 |    dev_err(dev, "%pfw: Unsupported reg value: %i, max supported is: %i.\n",
         |                                                                     ~^
         |                                                                      |
         |                                                                      int
         |                                                                     %li


vim +579 drivers/iio/adc/ti-tsc2046.c

   561	
   562	static void tsc2046_adc_parse_fwnode(struct tsc2046_adc_priv *priv)
   563	{
   564		struct fwnode_handle *child;
   565		struct device *dev = &priv->spi->dev;
   566	
   567		device_for_each_child_node(dev, child) {
   568			u32 stl, aver, reg;
   569			int ret;
   570	
   571			ret = fwnode_property_read_u32(child, "reg", &reg);
   572			if (ret) {
   573				dev_err(dev, "invalid reg on %pfw, err: %pe\n", child,
   574					ERR_PTR(ret));
   575				continue;
   576			}
   577	
   578			if (reg >= ARRAY_SIZE(priv->ch_cfg)) {
 > 579				dev_err(dev, "%pfw: Unsupported reg value: %i, max supported is: %i.\n",
   580					child, reg, ARRAY_SIZE(priv->ch_cfg));
   581				continue;
   582			}
   583	
   584			ret = fwnode_property_read_u32(child, "settling-time-us", &stl);
   585			if (!ret)
   586				priv->ch_cfg[reg].settling_time_us = stl;
   587	
   588			ret = fwnode_property_read_u32(child, "average-samples", &aver);
   589			if (!ret)
   590				priv->ch_cfg[reg].average_samples = aver;
   591		}
   592	}
   593	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org