Re: [v6 12/14] iio: imu: add BNO055 serdev driver

Hi,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v5.19-rc4 next-20220701]
[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/andrea-merello-iit-it/Add-support-for-Bosch-BNO055-IMU/20220614-203754
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220703/202207030922.GDkeqL76-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project bcd153485ebf07fe79e2b843ed5f1cb74997df1b)
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/f37504a206ca4b342e184a1fc137f6c47f3960e9
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review andrea-merello-iit-it/Add-support-for-Bosch-BNO055-IMU/20220614-203754
        git checkout f37504a206ca4b342e184a1fc137f6c47f3960e9
        # 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 SHELL=/bin/bash drivers/iio/

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

All warnings (new ones prefixed by >>):

   In file included from drivers/iio/imu/bno055/bno055_ser_trace.c:13:
   In file included from drivers/iio/imu/bno055/./bno055_ser_trace.h:104:
   In file included from include/trace/define_trace.h:102:
   In file included from include/trace/trace_events.h:237:

quoted

drivers/iio/imu/bno055/./bno055_ser_trace.h:92:9: warning: format specifies type 'int' but the argument has type 'size_t' (aka 'unsigned long') [-Wformat]

                         __entry->len, __entry->len, __get_dynamic_array(buf)
                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/trace/stages/stage3_trace_output.h:6:17: note: expanded from macro '__entry'
   #define __entry field
                   ^
   include/trace/stages/stage3_trace_output.h:9:43: note: expanded from macro 'TP_printk'
   #define TP_printk(fmt, args...) fmt "\n", args
                                   ~~~       ^
   include/trace/trace_events.h:45:16: note: expanded from macro 'TRACE_EVENT'
                                PARAMS(print));                   \
                                ~~~~~~~^~~~~~~
   include/linux/tracepoint.h:107:25: note: expanded from macro 'PARAMS'
   #define PARAMS(args...) args
                           ^~~~
   include/trace/trace_events.h:203:27: note: expanded from macro 'DECLARE_EVENT_CLASS'
           trace_event_printf(iter, print);                                \
                                    ^~~~~
   In file included from drivers/iio/imu/bno055/bno055_ser_trace.c:13:
   In file included from drivers/iio/imu/bno055/./bno055_ser_trace.h:104:
   In file included from include/trace/define_trace.h:102:
   In file included from include/trace/trace_events.h:237:

quoted

drivers/iio/imu/bno055/./bno055_ser_trace.h:91:36: warning: field width should have type 'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]

               TP_printk("len: %d, data: = %*ph",
               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
   include/trace/stages/stage3_trace_output.h:9:33: note: expanded from macro 'TP_printk'
   #define TP_printk(fmt, args...) fmt "\n", args
                                   ^~~
   include/trace/trace_events.h:45:16: note: expanded from macro 'TRACE_EVENT'
                                PARAMS(print));                   \
                                ~~~~~~~^~~~~~~
   include/linux/tracepoint.h:107:25: note: expanded from macro 'PARAMS'
   #define PARAMS(args...) args
                           ^~~~
   include/trace/trace_events.h:203:27: note: expanded from macro 'DECLARE_EVENT_CLASS'
           trace_event_printf(iter, print);                                \
                                    ^~~~~
   2 warnings generated.


vim +92 drivers/iio/imu/bno055/./bno055_ser_trace.h

    78	
    79	TRACE_EVENT(recv,
    80		    TP_PROTO(size_t len, const unsigned char *buf),
    81		    TP_ARGS(len, buf),
    82		    TP_STRUCT__entry(
    83			    __field(size_t, len)
    84			    __dynamic_array(unsigned char, buf, len)
    85		    ),
    86		    TP_fast_assign(
    87			    __entry->len = len;
    88			    memcpy(__get_dynamic_array(buf),
    89				   buf, __entry->len);
    90		    ),
  > 91		    TP_printk("len: %d, data: = %*ph",
  > 92			      __entry->len, __entry->len, __get_dynamic_array(buf)
    93		    )
    94	);
    95	

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