[plbossart-sound:fix/regmap-gpios 21/23] drivers/gpio/gpio-regmap.c:36:15: warning: result of comparison of constant 18446744073709551615 with expression of type 'unsigned int' is always false

[plbossart-sound:fix/regmap-gpios 21/23] drivers/gpio/gpio-regmap.c:36:15: warning: result of comparison of constant 18446744073709551615 with expression of type 'unsigned int' is always false

[kbuild test robot]

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Hi Pierre-Louis,

First bad commit (maybe != root cause):

tree:   https://github.com/plbossart/sound fix/regmap-gpios
head:   cba51e6099379d0d8b110c035e25736598a357dc
commit: 1b4257efce7e5ec1a01dffb723bbed65e26cc338 [21/23] transition to gpio_regmap
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2d068e534f1671459e1b135852c1b3c10502e929)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git checkout 1b4257efce7e5ec1a01dffb723bbed65e26cc338
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> drivers/gpio/gpio-regmap.c:36:15: warning: result of comparison of constant 18446744073709551615 with expression of type 'unsigned int' is always false [-Wtautological-constant-out-of-range-compare]
return (addr == GPIO_REGMAP_ADDR_ZERO) ? 0 : addr;
~~~~ ^  ~~~~~~~~~~~~~~~~~~~~~
1 warning generated.

vim +36 drivers/gpio/gpio-regmap.c

176fcd6a2c030b Michael Walle 2020-05-25  33  
176fcd6a2c030b Michael Walle 2020-05-25  34  static unsigned int gpio_regmap_addr(unsigned int addr)
176fcd6a2c030b Michael Walle 2020-05-25  35  {
176fcd6a2c030b Michael Walle 2020-05-25 @36  	return (addr == GPIO_REGMAP_ADDR_ZERO) ? 0 : addr;
176fcd6a2c030b Michael Walle 2020-05-25  37  }
176fcd6a2c030b Michael Walle 2020-05-25  38  

:::::: The code at line 36 was first introduced by commit
:::::: 176fcd6a2c030b65a0f99743fa8af2e2a7146788 gpio: add a reusable generic gpio_chip using regmap

:::::: TO: Michael Walle <michael@walle.cc>
:::::: CC: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

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

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