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SubjectRe: [PATCH v1 4/4] hwmon: add driver for the Microchip LAN966x SoC
Hi Michael,

I love your patch! Perhaps something to improve:

[auto build test WARNING on groeck-staging/hwmon-next]
[also build test WARNING on robh/for-next linus/master v5.17 next-20220325]
[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/intel-lab-lkp/linux/commits/Michael-Walle/hwmon-add-lan9668-driver/20220327-032606
base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: sparc64-randconfig-s031-20220327 (https://download.01.org/0day-ci/archive/20220327/202203271141.S44Wx3yF-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://github.com/intel-lab-lkp/linux/commit/cfef456b1f1b1ab545a03f098e209aff8ae507b7
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Michael-Walle/hwmon-add-lan9668-driver/20220327-032606
git checkout cfef456b1f1b1ab545a03f098e209aff8ae507b7
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 SHELL=/bin/bash drivers/hwmon/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/hwmon/lan966x-hwmon.c:302:24: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected struct regmap * @@ got void [noderef] __iomem *[assigned] base @@
drivers/hwmon/lan966x-hwmon.c:302:24: sparse: expected struct regmap *
drivers/hwmon/lan966x-hwmon.c:302:24: sparse: got void [noderef] __iomem *[assigned] base

vim +302 drivers/hwmon/lan966x-hwmon.c

289
290 static struct regmap *lan966x_init_regmap(struct platform_device *pdev,
291 const char *name)
292 {
293 struct regmap_config regmap_config = {
294 .reg_bits = 32,
295 .reg_stride = 4,
296 .val_bits = 32,
297 };
298 void __iomem *base;
299
300 base = devm_platform_ioremap_resource_byname(pdev, name);
301 if (IS_ERR(base))
> 302 return base;
303
304 regmap_config.name = name;
305
306 return devm_regmap_init_mmio(&pdev->dev, base, &regmap_config);
307 }
308

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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