linux-kernel - Re: [PATCH] staging: fbtft/fbtft-bus: remove empty macro argument

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Message-ID: <202509140751.ZWyZhali-lkp@intel.com>
Date: Sun, 14 Sep 2025 08:10:31 +0800
From: kernel test robot <lkp@...el.com>
To: Shay Power <shaythomaspower@...il.com>, linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, andy@...nel.org,
	linux-fbdev@...r.kernel.org, Shay Power <shaythomaspower@...il.com>
Subject: Re: [PATCH] staging: fbtft/fbtft-bus: remove empty macro argument

Hi Shay,

kernel test robot noticed the following build errors:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Shay-Power/staging-fbtft-fbtft-bus-remove-empty-macro-argument/20250914-050734
base:   staging/staging-testing
patch link:    https://lore.kernel.org/r/20250913210600.36986-1-shaythomaspower%40gmail.com
patch subject: [PATCH] staging: fbtft/fbtft-bus: remove empty macro argument
config: arc-randconfig-002-20250914 (https://download.01.org/0day-ci/archive/20250914/202509140751.ZWyZhali-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250914/202509140751.ZWyZhali-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509140751.ZWyZhali-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/staging/fbtft/fbtft-bus.c:65:53: error: macro "define_fbtft_write_reg" requires 4 arguments, but only 3 given
      65 | define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, u8)
         |                                                     ^
   drivers/staging/fbtft/fbtft-bus.c:14: note: macro "define_fbtft_write_reg" defined here
      14 | #define define_fbtft_write_reg(func, buffer_type, data_type, modifier)        \
         | 
>> drivers/staging/fbtft/fbtft-bus.c:65:23: error: expected ';' before 'void'
      65 | define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, u8)
         |                       ^
         |                       ;
   drivers/staging/fbtft/fbtft-bus.c:67:57: error: macro "define_fbtft_write_reg" requires 4 arguments, but only 3 given
      67 | define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, u16)
         |                                                         ^
   drivers/staging/fbtft/fbtft-bus.c:14: note: macro "define_fbtft_write_reg" defined here
      14 | #define define_fbtft_write_reg(func, buffer_type, data_type, modifier)        \
         | 
   drivers/staging/fbtft/fbtft-bus.c:67:23: error: expected ';' before 'void'
      67 | define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, u16)
         |                       ^
         |                       ;
      68 | 
      69 | void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...)
         | ~~~~                   


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

    64	
  > 65	define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, u8)
    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)
    68	

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