drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_optc.c:139:6: warning: no previous prototype for 'optc1_set_vupdate_keepout'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   923dcc5eb0c111eccd51cc7ce1658537e3c38b25
commit: 9df857f930d6035996d481b4e5bc9ce082990afb drm/amd/display: Move vupdate keepout programming from DCN20 to DCN10
date:   8 months ago
config: x86_64-randconfig-m001-20211109 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9df857f930d6035996d481b4e5bc9ce082990afb
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 9df857f930d6035996d481b4e5bc9ce082990afb
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_optc.c:139:6: warning: no previous prototype for 'optc1_set_vupdate_keepout' [-Wmissing-prototypes]
     139 | void optc1_set_vupdate_keepout(struct timing_generator *optc,
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_optc.c:879:6: warning: no previous prototype for 'optc1_setup_manual_trigger' [-Wmissing-prototypes]
     879 | void optc1_setup_manual_trigger(struct timing_generator *optc)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_optc.c:897:6: warning: no previous prototype for 'optc1_program_manual_trigger' [-Wmissing-prototypes]
     897 | void optc1_program_manual_trigger(struct timing_generator *optc)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/optc1_set_vupdate_keepout +139 drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_optc.c

   133	
   134	/**
   135	 * Vupdate keepout can be set to a window to block the update lock for that pipe from changing.
   136	 * Start offset begins with vstartup and goes for x number of clocks,
   137	 * end offset starts from end of vupdate to x number of clocks.
   138	 */
 > 139	void optc1_set_vupdate_keepout(struct timing_generator *optc,
   140				       struct vupdate_keepout_params *params)
   141	{
   142		struct optc *optc1 = DCN10TG_FROM_TG(optc);
   143	
   144		REG_SET_3(OTG_VUPDATE_KEEPOUT, 0,
   145			  MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_START_OFFSET, params->start_offset,
   146			  MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_END_OFFSET, params->end_offset,
   147			  OTG_MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_EN, params->enable);
   148	}
   149	

---
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Attachment: .config.gz
Description: application/gzip