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

From: kernel test robot
Date: Sat Apr 08 2023 - 13:27:32 EST


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@xxxxxxxxx/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@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202304090139.b8XZpHpu-lkp@xxxxxxxxx/

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

--
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https://github.com/intel/lkp-tests