linux-kernel - Re: [PATCH] staging: axis-fifo: initialize timeouts in probe only

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Date:   Tue, 14 Mar 2023 03:00:27 +0800
From:   kernel test robot <lkp@...el.com>
To:     Khadija Kamran <kamrankhadijadj@...il.com>,
        outreachy@...ts.linux.dev
Cc:     oe-kbuild-all@...ts.linux.dev,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: axis-fifo: initialize timeouts in probe only

Hi Khadija,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on staging/staging-testing]

url:    https://github.com/intel-lab-lkp/linux/commits/Khadija-Kamran/staging-axis-fifo-initialize-timeouts-in-probe-only/20230314-020827
patch link:    https://lore.kernel.org/r/ZA9mThZ7NyRrQAMX%40khadija-virtual-machine
patch subject: [PATCH] staging: axis-fifo: initialize timeouts in probe only
config: ia64-allyesconfig (https://download.01.org/0day-ci/archive/20230314/202303140222.Ku4vFjgO-lkp@intel.com/config)
compiler: ia64-linux-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/9d186f6c9f9bf467b48da3e28b0e9aa31fc3faf3
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Khadija-Kamran/staging-axis-fifo-initialize-timeouts-in-probe-only/20230314-020827
        git checkout 9d186f6c9f9bf467b48da3e28b0e9aa31fc3faf3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/staging/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303140222.Ku4vFjgO-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/limits.h:7,
                    from include/linux/kernel.h:16,
                    from drivers/staging/axis-fifo/axis-fifo.c:17:
   drivers/staging/axis-fifo/axis-fifo.c: In function 'axis_fifo_probe':
>> include/vdso/limits.h:11:25: warning: overflow in conversion from 'long int' to 'int' changes value from '9223372036854775807' to '-1' [-Woverflow]
      11 | #define LONG_MAX        ((long)(~0UL >> 1))
         |                         ^
   include/linux/sched.h:296:41: note: in expansion of macro 'LONG_MAX'
     296 | #define MAX_SCHEDULE_TIMEOUT            LONG_MAX
         |                                         ^~~~~~~~
   drivers/staging/axis-fifo/axis-fifo.c:817:32: note: in expansion of macro 'MAX_SCHEDULE_TIMEOUT'
     817 |                 read_timeout = MAX_SCHEDULE_TIMEOUT;
         |                                ^~~~~~~~~~~~~~~~~~~~
>> include/vdso/limits.h:11:25: warning: overflow in conversion from 'long int' to 'int' changes value from '9223372036854775807' to '-1' [-Woverflow]
      11 | #define LONG_MAX        ((long)(~0UL >> 1))
         |                         ^
   include/linux/sched.h:296:41: note: in expansion of macro 'LONG_MAX'
     296 | #define MAX_SCHEDULE_TIMEOUT            LONG_MAX
         |                                         ^~~~~~~~
   drivers/staging/axis-fifo/axis-fifo.c:822:33: note: in expansion of macro 'MAX_SCHEDULE_TIMEOUT'
     822 |                 write_timeout = MAX_SCHEDULE_TIMEOUT;
         |                                 ^~~~~~~~~~~~~~~~~~~~


vim +11 include/vdso/limits.h

3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   4  
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   5  #define USHRT_MAX	((unsigned short)~0U)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   6  #define SHRT_MAX	((short)(USHRT_MAX >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   7  #define SHRT_MIN	((short)(-SHRT_MAX - 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   8  #define INT_MAX		((int)(~0U >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   9  #define INT_MIN		(-INT_MAX - 1)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  10  #define UINT_MAX	(~0U)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20 @11  #define LONG_MAX	((long)(~0UL >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  12  #define LONG_MIN	(-LONG_MAX - 1)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  13  #define ULONG_MAX	(~0UL)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  14  #define LLONG_MAX	((long long)(~0ULL >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  15  #define LLONG_MIN	(-LLONG_MAX - 1)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  16  #define ULLONG_MAX	(~0ULL)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  17  #define UINTPTR_MAX	ULONG_MAX
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  18  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests