[intel-linux-intel-lts:5.10/yocto 107/184] drivers/video/fbdev/aty/atyfb_base.c:180:6: warning: no previous prototype for 'aty_st_lcd'

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

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tree:   https://github.com/intel/linux-intel-lts.git 5.10/yocto
head:   c655581515e4f1d166631c4fff3c0a64a0356c3b
commit: f11431c81837b0819854ee10da218949d4c7e2f1 [107/184] fbdev: atyfb: add stubs for aty_{ld,st}_lcd()
config: arm-randconfig-r011-20210630 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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/linux-intel-lts/commit/f11431c81837b0819854ee10da218949d4c7e2f1
        git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git
        git fetch --no-tags intel-linux-intel-lts 5.10/yocto
        git checkout f11431c81837b0819854ee10da218949d4c7e2f1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

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 'aty_st_lcd' [-Wmissing-prototypes]
     180 | void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
         |      ^~~~~~~~~~
>> drivers/video/fbdev/aty/atyfb_base.c:183:5: warning: no previous prototype for 'aty_ld_lcd' [-Wmissing-prototypes]
     183 | u32 aty_ld_lcd(int index, const struct atyfb_par *par)
         |     ^~~~~~~~~~


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(a)lists.01.org

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