tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   59126901f200f5fc907153468b03c64e0081b6e6
commit: 4259ff7ae509ed880b3a7bb685972c3a3bf4b74b drm/msm/dpu: add support for 
pcc color block in dpu driver
date:   4 months ago
config: arm64-randconfig-r013-20200904 (attached as .config)
compiler: aarch64-linux-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
        git checkout 4259ff7ae509ed880b3a7bb685972c3a3bf4b74b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 
ARCH=arm64 

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

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function 
'_dpu_crtc_setup_cp_blocks':
>> drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:460:23: warning: variable 'lm' set 
>> but not used [-Wunused-but-set-variable]
     460 |  struct dpu_hw_mixer *lm;
         |                       ^~

# 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4259ff7ae509ed880b3a7bb685972c3a3bf4b74b
git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 4259ff7ae509ed880b3a7bb685972c3a3bf4b74b
vim +/lm +460 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c

   452  
   453  static void _dpu_crtc_setup_cp_blocks(struct drm_crtc *crtc)
   454  {
   455          struct drm_crtc_state *state = crtc->state;
   456          struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state);
   457          struct dpu_crtc_mixer *mixer = cstate->mixers;
   458          struct dpu_hw_pcc_cfg cfg;
   459          struct dpu_hw_ctl *ctl;
 > 460          struct dpu_hw_mixer *lm;
   461          struct dpu_hw_dspp *dspp;
   462          int i;
   463  
   464  
   465          if (!state->color_mgmt_changed)
   466                  return;
   467  
   468          for (i = 0; i < cstate->num_mixers; i++) {
   469                  ctl = mixer[i].lm_ctl;
   470                  lm = mixer[i].hw_lm;
   471                  dspp = mixer[i].hw_dspp;
   472  
   473                  if (!dspp || !dspp->ops.setup_pcc)
   474                          continue;
   475  
   476                  if (!state->ctm) {
   477                          dspp->ops.setup_pcc(dspp, NULL);
   478                  } else {
   479                          _dpu_crtc_get_pcc_coeff(state, &cfg);
   480                          dspp->ops.setup_pcc(dspp, &cfg);
   481                  }
   482  
   483                  mixer[i].flush_mask |= ctl->ops.get_bitmask_dspp(ctl,
   484                          mixer[i].hw_dspp->idx);
   485  
   486                  /* stage config flush mask */
   487                  ctl->ops.update_pending_flush(ctl, mixer[i].flush_mask);
   488  
   489                  DPU_DEBUG("lm %d, ctl %d, flush mask 0x%x\n",
   490                          mixer[i].hw_lm->idx - DSPP_0,
   491                          ctl->idx - CTL_0,
   492                          mixer[i].flush_mask);
   493          }
   494  }
   495  

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

Attachment: .config.gz
Description: application/gzip

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