linux-kernel - Re: [PATCH] staging: fbtft: fbtft-bus.c added params

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Message-ID: <202304090139.b8XZpHpu-lkp@intel.com>
Date:   Sun, 9 Apr 2023 01:26:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     Deepanshu Kartikey <kartikey406@...il.com>,
        gregkh@...uxfoundation.org
Cc:     oe-kbuild-all@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Deepanshu Kartikey <kartikey406@...il.com>
Subject: Re: [PATCH] staging: fbtft: fbtft-bus.c added params

Hi Deepanshu,

kernel test robot noticed the following build warnings:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Deepanshu-Kartikey/staging-fbtft-fbtft-bus-c-added-params/20230408-161947
patch link:    https://lore.kernel.org/r/20230408081817.81562-1-kartikey406%40gmail.com
patch subject: [PATCH] staging: fbtft: fbtft-bus.c added params
config: i386-randconfig-s001-20230403 (https://download.01.org/0day-ci/archive/20230409/202304090139.b8XZpHpu-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/038bedbb2c34ffc5e5ce77d5f49811778be8d631
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Deepanshu-Kartikey/staging-fbtft-fbtft-bus-c-added-params/20230408-161947
        git checkout 038bedbb2c34ffc5e5ce77d5f49811778be8d631
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/staging/fbtft/

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/202304090139.b8XZpHpu-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/staging/fbtft/fbtft-bus.c:65:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned char [usertype] @@     got restricted __be16 [usertype] @@
   drivers/staging/fbtft/fbtft-bus.c:65:1: sparse:     expected unsigned char [usertype]
   drivers/staging/fbtft/fbtft-bus.c:65:1: sparse:     got restricted __be16 [usertype]
>> drivers/staging/fbtft/fbtft-bus.c:65:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned char [usertype] @@     got restricted __be16 [usertype] @@
   drivers/staging/fbtft/fbtft-bus.c:65:1: sparse:     expected unsigned char [usertype]
   drivers/staging/fbtft/fbtft-bus.c:65:1: sparse:     got restricted __be16 [usertype]
>> drivers/staging/fbtft/fbtft-bus.c:65:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned char [usertype] @@     got restricted __be16 [usertype] @@
   drivers/staging/fbtft/fbtft-bus.c:65:1: sparse:     expected unsigned char [usertype]
   drivers/staging/fbtft/fbtft-bus.c:65:1: sparse:     got restricted __be16 [usertype]
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned short [usertype] @@     got restricted __be16 [usertype] @@
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse:     expected unsigned short [usertype]
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse:     got restricted __be16 [usertype]
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned short [usertype] @@     got restricted __be16 [usertype] @@
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse:     expected unsigned short [usertype]
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse:     got restricted __be16 [usertype]
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned short [usertype] @@     got restricted __be16 [usertype] @@
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse:     expected unsigned short [usertype]
   drivers/staging/fbtft/fbtft-bus.c:67:1: sparse:     got restricted __be16 [usertype]

vim +65 drivers/staging/fbtft/fbtft-bus.c

    64	
  > 65	define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, u8, cpu_to_be16);
    66	define_fbtft_write_reg(fbtft_write_reg16_bus8, __be16, u16, cpu_to_be16);
    67	define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, u16, cpu_to_be16);
    68	

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