[linux-next:master 11942/12503] drivers/video/fbdev/aty/atyfb_base.c:180:6: warning: no previous prototype for function 'aty_st_lcd'

[kernel test robot <lkp@intel.com>]

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Hi Randy,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   577c283560fe8a81a23a95654c6d13e8412d22f1
commit: bfa5782b9caa26f93f42ad79804e1f75a1ce9f18 [11942/12503] fbdev: atyfb: add stubs for aty_{ld,st}_lcd()
config: arm64-randconfig-r004-20210223 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project f14a14dd2564703db02f80c00db8ae492b594f77)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=bfa5782b9caa26f93f42ad79804e1f75a1ce9f18
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout bfa5782b9caa26f93f42ad79804e1f75a1ce9f18
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/video/fbdev/aty/atyfb_base.c:180:6: warning: no previous prototype for function 'aty_st_lcd' [-Wmissing-prototypes]
   void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
        ^
   drivers/video/fbdev/aty/atyfb_base.c:180:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
   ^
   static 
>> drivers/video/fbdev/aty/atyfb_base.c:183:5: warning: no previous prototype for function 'aty_ld_lcd' [-Wmissing-prototypes]
   u32 aty_ld_lcd(int index, const struct atyfb_par *par)
       ^
   drivers/video/fbdev/aty/atyfb_base.c:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   u32 aty_ld_lcd(int index, const struct atyfb_par *par)
   ^
   static 
   2 warnings generated.


vim +/aty_st_lcd +180 drivers/video/fbdev/aty/atyfb_base.c

   163	
   164	u32 aty_ld_lcd(int index, const struct atyfb_par *par)
   165	{
   166		if (M64_HAS(LT_LCD_REGS)) {
   167			return aty_ld_le32(lt_lcd_regs[index], par);
   168		} else {
   169			unsigned long temp;
   170	
   171			/* write addr byte */
   172			temp = aty_ld_le32(LCD_INDEX, par);
   173			aty_st_le32(LCD_INDEX, (temp & ~LCD_INDEX_MASK) | index, par);
   174			/* read the register value */
   175			return aty_ld_le32(LCD_DATA, par);
   176		}
   177	}
   178	#else /* defined(CONFIG_PMAC_BACKLIGHT) || defined(CONFIG_FB_ATY_BACKLIGHT) \
   179		 defined(CONFIG_FB_ATY_GENERIC_LCD) */
 > 180	void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
   181	{ }
   182	
 > 183	u32 aty_ld_lcd(int index, const struct atyfb_par *par)
   184	{
   185		return 0;
   186	}
   187	#endif /* defined(CONFIG_PMAC_BACKLIGHT) || defined (CONFIG_FB_ATY_GENERIC_LCD) */
   188	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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