[Intel-gfx] [drm-intel:for-linux-next 1/1] drivers/gpu/drm/i915/display/intel_display.c:6012:3: warning: unannotated fall-through between switch labels

kernel test robot lkp at intel.com
Mon May 22 17:48:57 UTC 2023


tree:   git://anongit.freedesktop.org/drm-intel for-linux-next
head:   937859485aefed1d9df72feb6ea74a84ff5cfa46
commit: 937859485aefed1d9df72feb6ea74a84ff5cfa46 [1/1] drm/i915: Support Async Flip on Linear buffers
config: x86_64-randconfig-a012-20230522 (https://download.01.org/0day-ci/archive/20230523/202305230153.lce5jQM9-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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 drm-intel git://anongit.freedesktop.org/drm-intel
        git fetch --no-tags drm-intel for-linux-next
        git checkout 937859485aefed1d9df72feb6ea74a84ff5cfa46
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305230153.lce5jQM9-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/display/intel_display.c:6012:3: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
                   case I915_FORMAT_MOD_X_TILED:
                   ^
   drivers/gpu/drm/i915/display/intel_display.c:6012:3: note: insert 'break;' to avoid fall-through
                   case I915_FORMAT_MOD_X_TILED:
                   ^
                   break; 
   1 warning generated.


vim +6012 drivers/gpu/drm/i915/display/intel_display.c

b0b2bed2a1305c Ville Syrjälä         2022-02-14  5931  
b0b2bed2a1305c Ville Syrjälä         2022-02-14  5932  static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct intel_crtc *crtc)
30ff93af9e19db Karthik B S           2020-09-21  5933  {
30ff93af9e19db Karthik B S           2020-09-21  5934  	struct drm_i915_private *i915 = to_i915(state->base.dev);
30ff93af9e19db Karthik B S           2020-09-21  5935  	const struct intel_crtc_state *old_crtc_state, *new_crtc_state;
30ff93af9e19db Karthik B S           2020-09-21  5936  	const struct intel_plane_state *new_plane_state, *old_plane_state;
30ff93af9e19db Karthik B S           2020-09-21  5937  	struct intel_plane *plane;
30ff93af9e19db Karthik B S           2020-09-21  5938  	int i;
30ff93af9e19db Karthik B S           2020-09-21  5939  
0826edb6a5e5b3 José Roberto de Souza 2021-10-29  5940  	old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
0826edb6a5e5b3 José Roberto de Souza 2021-10-29  5941  	new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
0826edb6a5e5b3 José Roberto de Souza 2021-10-29  5942  
b0b2bed2a1305c Ville Syrjälä         2022-02-14  5943  	if (!new_crtc_state->uapi.async_flip)
b0b2bed2a1305c Ville Syrjälä         2022-02-14  5944  		return 0;
b0b2bed2a1305c Ville Syrjälä         2022-02-14  5945  
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5946  	if (!new_crtc_state->hw.active) {
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5947  		drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5948  			    "[CRTC:%d:%s] not active\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5949  			    crtc->base.base.id, crtc->base.name);
30ff93af9e19db Karthik B S           2020-09-21  5950  		return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  5951  	}
30ff93af9e19db Karthik B S           2020-09-21  5952  
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5953  	if (intel_crtc_needs_modeset(new_crtc_state)) {
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5954  		drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5955  			    "[CRTC:%d:%s] modeset required\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5956  			    crtc->base.base.id, crtc->base.name);
30ff93af9e19db Karthik B S           2020-09-21  5957  		return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  5958  	}
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5959  
30ff93af9e19db Karthik B S           2020-09-21  5960  	if (old_crtc_state->active_planes != new_crtc_state->active_planes) {
30ff93af9e19db Karthik B S           2020-09-21  5961  		drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5962  			    "[CRTC:%d:%s] Active planes cannot be in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  5963  			    crtc->base.base.id, crtc->base.name);
30ff93af9e19db Karthik B S           2020-09-21  5964  		return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  5965  	}
30ff93af9e19db Karthik B S           2020-09-21  5966  
30ff93af9e19db Karthik B S           2020-09-21  5967  	for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
30ff93af9e19db Karthik B S           2020-09-21  5968  					     new_plane_state, i) {
0826edb6a5e5b3 José Roberto de Souza 2021-10-29  5969  		if (plane->pipe != crtc->pipe)
0826edb6a5e5b3 José Roberto de Souza 2021-10-29  5970  			continue;
0826edb6a5e5b3 José Roberto de Souza 2021-10-29  5971  
30ff93af9e19db Karthik B S           2020-09-21  5972  		/*
2e08437160d1e8 Ville Syrjälä         2022-02-14  5973  		 * Only async flip capable planes should be in the state
2e08437160d1e8 Ville Syrjälä         2022-02-14  5974  		 * if we're really about to ask the hardware to perform
2e08437160d1e8 Ville Syrjälä         2022-02-14  5975  		 * an async flip. We should never get this far otherwise.
30ff93af9e19db Karthik B S           2020-09-21  5976  		 */
2e08437160d1e8 Ville Syrjälä         2022-02-14  5977  		if (drm_WARN_ON(&i915->drm,
2e08437160d1e8 Ville Syrjälä         2022-02-14  5978  				new_crtc_state->do_async_flip && !plane->async_flip))
30ff93af9e19db Karthik B S           2020-09-21  5979  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  5980  
2e08437160d1e8 Ville Syrjälä         2022-02-14  5981  		/*
2e08437160d1e8 Ville Syrjälä         2022-02-14  5982  		 * Only check async flip capable planes other planes
2e08437160d1e8 Ville Syrjälä         2022-02-14  5983  		 * may be involved in the initial commit due to
2e08437160d1e8 Ville Syrjälä         2022-02-14  5984  		 * the wm0/ddb optimization.
2e08437160d1e8 Ville Syrjälä         2022-02-14  5985  		 *
2e08437160d1e8 Ville Syrjälä         2022-02-14  5986  		 * TODO maybe should track which planes actually
2e08437160d1e8 Ville Syrjälä         2022-02-14  5987  		 * were requested to do the async flip...
2e08437160d1e8 Ville Syrjälä         2022-02-14  5988  		 */
2e08437160d1e8 Ville Syrjälä         2022-02-14  5989  		if (!plane->async_flip)
2e08437160d1e8 Ville Syrjälä         2022-02-14  5990  			continue;
2e08437160d1e8 Ville Syrjälä         2022-02-14  5991  
30ff93af9e19db Karthik B S           2020-09-21  5992  		/*
30ff93af9e19db Karthik B S           2020-09-21  5993  		 * FIXME: This check is kept generic for all platforms.
244dba4cb59637 Lucas De Marchi       2021-07-28  5994  		 * Need to verify this for all gen9 platforms to enable
30ff93af9e19db Karthik B S           2020-09-21  5995  		 * this selectively if required.
30ff93af9e19db Karthik B S           2020-09-21  5996  		 */
30ff93af9e19db Karthik B S           2020-09-21  5997  		switch (new_plane_state->hw.fb->modifier) {
937859485aefed Arun R Murthy         2022-09-06  5998  		case DRM_FORMAT_MOD_LINEAR:
937859485aefed Arun R Murthy         2022-09-06  5999  			/*
937859485aefed Arun R Murthy         2022-09-06  6000  			 * FIXME: Async on Linear buffer is supported on ICL as
937859485aefed Arun R Murthy         2022-09-06  6001  			 * but with additional alignment and fbc restrictions
937859485aefed Arun R Murthy         2022-09-06  6002  			 * need to be taken care of. These aren't applicable for
937859485aefed Arun R Murthy         2022-09-06  6003  			 * gen12+.
937859485aefed Arun R Murthy         2022-09-06  6004  			 */
937859485aefed Arun R Murthy         2022-09-06  6005  			if (DISPLAY_VER(i915) < 12) {
937859485aefed Arun R Murthy         2022-09-06  6006  				drm_dbg_kms(&i915->drm,
937859485aefed Arun R Murthy         2022-09-06  6007  					    "[PLANE:%d:%s] Modifier does not support async flips\n",
937859485aefed Arun R Murthy         2022-09-06  6008  					    plane->base.base.id, plane->base.name);
937859485aefed Arun R Murthy         2022-09-06  6009  				return -EINVAL;
937859485aefed Arun R Murthy         2022-09-06  6010  			}
937859485aefed Arun R Murthy         2022-09-06  6011  
30ff93af9e19db Karthik B S           2020-09-21 @6012  		case I915_FORMAT_MOD_X_TILED:
30ff93af9e19db Karthik B S           2020-09-21  6013  		case I915_FORMAT_MOD_Y_TILED:
30ff93af9e19db Karthik B S           2020-09-21  6014  		case I915_FORMAT_MOD_Yf_TILED:
072ce4164f973b Stanislav Lisovskiy   2022-01-18  6015  		case I915_FORMAT_MOD_4_TILED:
30ff93af9e19db Karthik B S           2020-09-21  6016  			break;
30ff93af9e19db Karthik B S           2020-09-21  6017  		default:
30ff93af9e19db Karthik B S           2020-09-21  6018  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6019  				    "[PLANE:%d:%s] Modifier does not support async flips\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6020  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6021  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6022  		}
30ff93af9e19db Karthik B S           2020-09-21  6023  
aaec72ee90bccc Ville Syrjälä         2021-10-18  6024  		if (new_plane_state->hw.fb->format->num_planes > 1) {
aaec72ee90bccc Ville Syrjälä         2021-10-18  6025  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6026  				    "[PLANE:%d:%s] Planar formats do not support async flips\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6027  				    plane->base.base.id, plane->base.name);
aaec72ee90bccc Ville Syrjälä         2021-10-18  6028  			return -EINVAL;
aaec72ee90bccc Ville Syrjälä         2021-10-18  6029  		}
aaec72ee90bccc Ville Syrjälä         2021-10-18  6030  
be6c1dd5ac074d Imre Deak             2021-10-27  6031  		if (old_plane_state->view.color_plane[0].mapping_stride !=
be6c1dd5ac074d Imre Deak             2021-10-27  6032  		    new_plane_state->view.color_plane[0].mapping_stride) {
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6033  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6034  				    "[PLANE:%d:%s] Stride cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6035  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6036  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6037  		}
30ff93af9e19db Karthik B S           2020-09-21  6038  
30ff93af9e19db Karthik B S           2020-09-21  6039  		if (old_plane_state->hw.fb->modifier !=
30ff93af9e19db Karthik B S           2020-09-21  6040  		    new_plane_state->hw.fb->modifier) {
30ff93af9e19db Karthik B S           2020-09-21  6041  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6042  				    "[PLANE:%d:%s] Modifier cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6043  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6044  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6045  		}
30ff93af9e19db Karthik B S           2020-09-21  6046  
30ff93af9e19db Karthik B S           2020-09-21  6047  		if (old_plane_state->hw.fb->format !=
30ff93af9e19db Karthik B S           2020-09-21  6048  		    new_plane_state->hw.fb->format) {
30ff93af9e19db Karthik B S           2020-09-21  6049  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6050  				    "[PLANE:%d:%s] Pixel format cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6051  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6052  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6053  		}
30ff93af9e19db Karthik B S           2020-09-21  6054  
30ff93af9e19db Karthik B S           2020-09-21  6055  		if (old_plane_state->hw.rotation !=
30ff93af9e19db Karthik B S           2020-09-21  6056  		    new_plane_state->hw.rotation) {
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6057  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6058  				    "[PLANE:%d:%s] Rotation cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6059  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6060  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6061  		}
30ff93af9e19db Karthik B S           2020-09-21  6062  
30ff93af9e19db Karthik B S           2020-09-21  6063  		if (!drm_rect_equals(&old_plane_state->uapi.src, &new_plane_state->uapi.src) ||
30ff93af9e19db Karthik B S           2020-09-21  6064  		    !drm_rect_equals(&old_plane_state->uapi.dst, &new_plane_state->uapi.dst)) {
30ff93af9e19db Karthik B S           2020-09-21  6065  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6066  				    "[PLANE:%d:%s] Size/co-ordinates cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6067  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6068  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6069  		}
30ff93af9e19db Karthik B S           2020-09-21  6070  
30ff93af9e19db Karthik B S           2020-09-21  6071  		if (old_plane_state->hw.alpha != new_plane_state->hw.alpha) {
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6072  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6073  				    "[PLANES:%d:%s] Alpha value cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6074  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6075  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6076  		}
30ff93af9e19db Karthik B S           2020-09-21  6077  
30ff93af9e19db Karthik B S           2020-09-21  6078  		if (old_plane_state->hw.pixel_blend_mode !=
30ff93af9e19db Karthik B S           2020-09-21  6079  		    new_plane_state->hw.pixel_blend_mode) {
30ff93af9e19db Karthik B S           2020-09-21  6080  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6081  				    "[PLANE:%d:%s] Pixel blend mode cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6082  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6083  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6084  		}
30ff93af9e19db Karthik B S           2020-09-21  6085  
30ff93af9e19db Karthik B S           2020-09-21  6086  		if (old_plane_state->hw.color_encoding != new_plane_state->hw.color_encoding) {
30ff93af9e19db Karthik B S           2020-09-21  6087  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6088  				    "[PLANE:%d:%s] Color encoding cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6089  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6090  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6091  		}
30ff93af9e19db Karthik B S           2020-09-21  6092  
30ff93af9e19db Karthik B S           2020-09-21  6093  		if (old_plane_state->hw.color_range != new_plane_state->hw.color_range) {
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6094  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6095  				    "[PLANE:%d:%s] Color range cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6096  				    plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S           2020-09-21  6097  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6098  		}
ef6ba31dd38405 Anshuman Gupta        2021-09-24  6099  
ef6ba31dd38405 Anshuman Gupta        2021-09-24  6100  		/* plane decryption is allow to change only in synchronous flips */
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6101  		if (old_plane_state->decrypt != new_plane_state->decrypt) {
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6102  			drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6103  				    "[PLANE:%d:%s] Decryption cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6104  				    plane->base.base.id, plane->base.name);
ef6ba31dd38405 Anshuman Gupta        2021-09-24  6105  			return -EINVAL;
30ff93af9e19db Karthik B S           2020-09-21  6106  		}
6b4e414ce8dab7 Ville Syrjälä         2022-02-14  6107  	}
30ff93af9e19db Karthik B S           2020-09-21  6108  
30ff93af9e19db Karthik B S           2020-09-21  6109  	return 0;
30ff93af9e19db Karthik B S           2020-09-21  6110  }
30ff93af9e19db Karthik B S           2020-09-21  6111  

:::::: The code at line 6012 was first introduced by commit
:::::: 30ff93af9e19dbe88ff8b5e711e05b26b991eec0 drm/i915: Add checks specific to async flips

:::::: TO: Karthik B S <karthik.b.s at intel.com>
:::::: CC: Ville Syrjälä <ville.syrjala at linux.intel.com>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


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