[kbuild-all] Re: [tegra-drm:drm/tegra/for-next 16/17] drivers/gpu/drm/tegra/dc.c:1843:53: warning: variable 'new_dc_state' set but not used

tree: git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next head: ad85b0843ee4536593415ca890d7fb52cd7f1fbe commit: 04d5d5df9df79f9045e76404775fc8a084aac23d [16/17] drm/tegra: dc: Support memory bandwidth management config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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 git remote add tegra-drm git://anongit.freedesktop.org/tegra/linux.git git fetch --no-tags tegra-drm drm/tegra/for-next git checkout 04d5d5df9df79f9045e76404775fc8a084aac23d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/gpu/drm/tegra/dc.c: In function 'tegra_crtc_update_memory_bandwidth': >> drivers/gpu/drm/tegra/dc.c:1843:53: warning: variable 'new_dc_state' set but not used [-Wunused-but-set-variable] 1843 | const struct tegra_dc_state *old_dc_state, *new_dc_state; | ^~~~~~~~~~~~ >> drivers/gpu/drm/tegra/dc.c:1843:38: warning: variable 'old_dc_state' set but not used [-Wunused-but-set-variable] 1843 | const struct tegra_dc_state *old_dc_state, *new_dc_state; | ^~~~~~~~~~~~ drivers/gpu/drm/tegra/dc.c: In function 'tegra_crtc_calculate_memory_bandwidth': >> drivers/gpu/drm/tegra/dc.c:2223:38: warning: variable 'old_state' set but not used [-Wunused-but-set-variable] 2223 | const struct drm_crtc_state *old_state; | ^~~~~~~~~ vim +/new_dc_state +1843 drivers/gpu/drm/tegra/dc.c 1836 1837 static void 1838 tegra_crtc_update_memory_bandwidth(struct drm_crtc *crtc, 1839 struct drm_atomic_state *state, 1840 bool prepare_bandwidth_transition) 1841 { 1842 const struct tegra_plane_state *old_tegra_state, *new_tegra_state; > 1843 const struct tegra_dc_state *old_dc_state, *new_dc_state; 1844 u32 i, new_avg_bw, old_avg_bw, new_peak_bw, old_peak_bw; 1845 const struct drm_plane_state *old_plane_state; 1846 const struct drm_crtc_state *old_crtc_state; 1847 struct tegra_dc_window window, old_window; 1848 struct tegra_dc *dc = to_tegra_dc(crtc); 1849 struct tegra_plane *tegra; 1850 struct drm_plane *plane; 1851 1852 if (dc->soc->has_nvdisplay) 1853 return; 1854 1855 old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc); 1856 old_dc_state = to_const_dc_state(old_crtc_state); 1857 new_dc_state = to_const_dc_state(crtc->state);