Re: [PATCH v2 2/2] clk: keystone: Add support AM62 DSS clock divider

[kernel test robot <lkp@intel.com>]

Hi Aradhya,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on clk/clk-next]
[also build test ERROR on linus/master v6.2 next-20230303]
[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/Aradhya-Bhatia/dt-bindings-clock-Add-binding-documentation-for-TI-AM62-DSS-Clock/20230213-200203
base:   https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next
patch link:    https://lore.kernel.org/r/20230213115954.553-3-a-bhatia1%40ti.com
patch subject: [PATCH v2 2/2] clk: keystone: Add support AM62 DSS clock divider
config: arm-randconfig-r046-20230302 (https://download.01.org/0day-ci/archive/20230304/202303040131.k7AUxAg5-lkp@intel.com/config)
compiler: arm-linux-gnueabi-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/2ddb7301b11092b73d4a16af06362954f3d5f714
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Aradhya-Bhatia/dt-bindings-clock-Add-binding-documentation-for-TI-AM62-DSS-Clock/20230213-200203
        git checkout 2ddb7301b11092b73d4a16af06362954f3d5f714
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/clk/ mm// net/

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/202303040131.k7AUxAg5-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/arm/include/asm/div64.h:107,
                    from include/linux/math.h:6,
                    from include/linux/math64.h:6,
                    from include/linux/time.h:6,
                    from include/linux/stat.h:19,
                    from include/linux/module.h:13,
                    from drivers/clk/keystone/clk-am62-dss.c:5:
   drivers/clk/keystone/clk-am62-dss.c: In function 'ti_am62_dss_clk_recalc_rate':
   include/asm-generic/div64.h:222:35: warning: comparison of distinct pointer types lacks a cast
     222 |         (void)(((typeof((n)) *)0) == ((uint64_t *)0));  \
         |                                   ^~
   drivers/clk/keystone/clk-am62-dss.c:24:9: note: in expansion of macro 'do_div'
      24 |         do_div(rate, priv->div);
         |         ^~~~~~
   In file included from include/linux/build_bug.h:5,
                    from include/linux/container_of.h:5,
                    from include/linux/list.h:5,
                    from include/linux/module.h:12:
   include/asm-generic/div64.h:234:32: warning: right shift count >= width of type [-Wshift-count-overflow]
     234 |         } else if (likely(((n) >> 32) == 0)) {          \
         |                                ^~
   include/linux/compiler.h:77:45: note: in definition of macro 'likely'
      77 | # define likely(x)      __builtin_expect(!!(x), 1)
         |                                             ^
   drivers/clk/keystone/clk-am62-dss.c:24:9: note: in expansion of macro 'do_div'
      24 |         do_div(rate, priv->div);
         |         ^~~~~~
   include/asm-generic/div64.h:238:36: error: passing argument 1 of '__div64_32' from incompatible pointer type [-Werror=incompatible-pointer-types]
     238 |                 __rem = __div64_32(&(n), __base);       \
         |                                    ^~~~
         |                                    |
         |                                    long unsigned int *
   drivers/clk/keystone/clk-am62-dss.c:24:9: note: in expansion of macro 'do_div'
      24 |         do_div(rate, priv->div);
         |         ^~~~~~
   arch/arm/include/asm/div64.h:24:45: note: expected 'uint64_t *' {aka 'long long unsigned int *'} but argument is of type 'long unsigned int *'
      24 | static inline uint32_t __div64_32(uint64_t *n, uint32_t base)
         |                                   ~~~~~~~~~~^
   drivers/clk/keystone/clk-am62-dss.c: In function 'clk_hw_unregister_am62_dss_clk':
>> drivers/clk/keystone/clk-am62-dss.c:99:9: error: implicit declaration of function 'kfree'; did you mean 'kvfree'? [-Werror=implicit-function-declaration]
      99 |         kfree(priv);
         |         ^~~~~
         |         kvfree
   cc1: some warnings being treated as errors


vim +99 drivers/clk/keystone/clk-am62-dss.c

    91	
    92	static void clk_hw_unregister_am62_dss_clk(struct clk_hw *hw)
    93	{
    94		struct ti_am62_dss_clk *priv;
    95	
    96		priv = to_ti_am62_dss_clk(hw);
    97	
    98		clk_hw_unregister(hw);
  > 99		kfree(priv);
   100	}
   101	

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