[chrome-os:chromeos-6.6 229/229] drivers/gpu/drm/mediatek/mtk_dp_v2.c:3370:12: warning: variable 'data' set but not used

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

tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-6.6
head:   69fc64873274f4b1c5a6c4617cc39b8d59fafbdf
commit: 8fd26707ff2ec98f3a31cafc54c74a1399171b24 [229/229] CHROMIUM: drm/mediatek: Add dp and dp_intf base
config: arm64-randconfig-001-20250212 (https://download.01.org/0day-ci/archive/20250212/202502120603.J6VilCJI-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250212/202502120603.J6VilCJI-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502120603.J6VilCJI-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/mediatek/mtk_dp_v2.c: In function 'mtk_dp_video_config_v2':
>> drivers/gpu/drm/mediatek/mtk_dp_v2.c:3370:12: warning: variable 'data' set but not used [-Wunused-but-set-variable]
    3370 |         u8 data;
         |            ^~~~
   drivers/gpu/drm/mediatek/mtk_dp_v2.c: At top level:
   drivers/gpu/drm/mediatek/mtk_dp_v2.c:4043:18: warning: initialized field overwritten [-Woverride-init]
    4043 |         .reset = drm_atomic_helper_connector_reset,
         |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_dp_v2.c:4043:18: note: (near initialization for 'mtk_dp_con_funcs.reset')
   drivers/gpu/drm/mediatek/mtk_dp_v2.c: In function 'mtk_dp_bridge_atomic_get_input_bus_fmts_v2':
   drivers/gpu/drm/mediatek/mtk_dp_v2.c:4285:43: warning: variable 'state' set but not used [-Wunused-but-set-variable]
    4285 |         struct drm_dp_mst_topology_state *state;
         |                                           ^~~~~
--
>> drivers/gpu/drm/mediatek/mtk_dpi_v2.c:175: warning: Function parameter or member 'use_version_2' not described in 'mtk_dpi_conf'


vim +/data +3370 drivers/gpu/drm/mediatek/mtk_dp_v2.c

  3365	
  3366	static void mtk_dp_video_config_v2(struct mtk_dp *mtk_dp, const enum dp_encoder_id encoder_id)
  3367	{
  3368		struct dp_timing_parameter *dp_timing = &mtk_dp->info[encoder_id].dp_output_timing;
  3369		struct videomode vm = {0};
> 3370		u8 data;
  3371	
  3372		if (!mtk_dp->dp_ready) {
  3373			dev_err(mtk_dp->dev, "%s, DP is not ready\n", __func__);
  3374			return;
  3375		}
  3376	
  3377		data = mtk_dp->dsc_enable[encoder_id];
  3378	
  3379		mtk_dp_mn_overwrite_v2(mtk_dp, encoder_id, false, 0x0, 0x8000);
  3380	
  3381		vm.hactive = mtk_dp->mode[encoder_id].hdisplay;
  3382		vm.hfront_porch = mtk_dp->mode[encoder_id].hsync_start - mtk_dp->mode[encoder_id].hdisplay;
  3383		vm.hsync_len = mtk_dp->mode[encoder_id].hsync_end - mtk_dp->mode[encoder_id].hsync_start;
  3384		vm.hback_porch = mtk_dp->mode[encoder_id].htotal - mtk_dp->mode[encoder_id].hsync_end;
  3385		vm.vactive = mtk_dp->mode[encoder_id].vdisplay;
  3386		vm.vfront_porch = mtk_dp->mode[encoder_id].vsync_start - mtk_dp->mode[encoder_id].vdisplay;
  3387		vm.vsync_len = mtk_dp->mode[encoder_id].vsync_end - mtk_dp->mode[encoder_id].vsync_start;
  3388		vm.vback_porch = mtk_dp->mode[encoder_id].vtotal - mtk_dp->mode[encoder_id].vsync_end;
  3389		vm.pixelclock = mtk_dp->mode[encoder_id].clock * 1000;
  3390	
  3391		dp_timing->frame_rate = mtk_dp->mode[encoder_id].clock * 1000 /
  3392					mtk_dp->mode[encoder_id].htotal / mtk_dp->mode[encoder_id].vtotal;
  3393		dp_timing->htt = mtk_dp->mode[encoder_id].htotal;
  3394		dp_timing->hbp = vm.hback_porch;
  3395		dp_timing->hsw = vm.hsync_len;
  3396		dp_timing->hsp = mtk_dp->mode[encoder_id].flags & DRM_MODE_FLAG_PHSYNC;
  3397		dp_timing->hfp = vm.hfront_porch;
  3398		dp_timing->hde = vm.hactive;
  3399		dp_timing->vtt = mtk_dp->mode[encoder_id].vtotal;
  3400		dp_timing->vbp = vm.vback_porch;
  3401		dp_timing->vsw = vm.vsync_len;
  3402		dp_timing->vsp = mtk_dp->mode[encoder_id].flags & DRM_MODE_FLAG_PVSYNC;
  3403		dp_timing->vfp = vm.vfront_porch;
  3404		dp_timing->vde = vm.vactive;
  3405	
  3406		dev_dbg(mtk_dp->dev, "frame_rate:%d\n", dp_timing->frame_rate);
  3407		dev_dbg(mtk_dp->dev, "htt:%d\n", dp_timing->htt);
  3408		dev_dbg(mtk_dp->dev, "hbp:%d\n", dp_timing->hbp);
  3409		dev_dbg(mtk_dp->dev, "hsw:%d\n", dp_timing->hsw);
  3410		dev_dbg(mtk_dp->dev, "hsp:%d\n", dp_timing->hsp);
  3411		dev_dbg(mtk_dp->dev, "hfp:%d\n", dp_timing->hfp);
  3412		dev_dbg(mtk_dp->dev, "hde:%d\n", dp_timing->hde);
  3413		dev_dbg(mtk_dp->dev, "vtt:%d\n", dp_timing->vtt);
  3414		dev_dbg(mtk_dp->dev, "vbp:%d\n", dp_timing->vbp);
  3415		dev_dbg(mtk_dp->dev, "vsw:%d\n", dp_timing->vsw);
  3416		dev_dbg(mtk_dp->dev, "vsp:%d\n", dp_timing->vsp);
  3417		dev_dbg(mtk_dp->dev, "vfp:%d\n", dp_timing->vfp);
  3418		dev_dbg(mtk_dp->dev, "vde:%d\n", dp_timing->vde);
  3419	
  3420		mtk_dp_mn_calculate_v2(mtk_dp, encoder_id);
  3421	
  3422		/* interlace not support */
  3423		dp_timing->video_ip_mode = DP_VIDEO_PROGRESSIVE;
  3424		mtk_dp_msa_set_v2(mtk_dp, encoder_id);
  3425	
  3426		mtk_dp_set_misc_v2(mtk_dp, encoder_id);
  3427		if (mtk_dp->info[encoder_id].pattern_gen)
  3428			mtk_dp_pg_type_sel_v2(mtk_dp, encoder_id,
  3429					      DP_PG_VERTICAL_COLOR_BAR,
  3430					      DP_PG_PURECOLOR_BLUE,
  3431					      0xfff,
  3432					      DP_PG_LOCATION_ALL);
  3433	
  3434		if (!mtk_dp->dsc_enable[encoder_id]) {
  3435			mtk_dp_color_set_depth_v2(mtk_dp, encoder_id, mtk_dp->info[encoder_id].depth);
  3436			mtk_dp_color_set_format_v2(mtk_dp, encoder_id, mtk_dp->info[encoder_id].format);
  3437		}
  3438	}
  3439	

-- 
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