Re: [PATCH] drm/amd/display: fix usage of DC_FPU_{BEGIN,END} with PREEMPT_RT

[kernel test robot]

Hi Bert,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20260804]
[cannot apply to drm-misc/drm-misc-next linus/master v7.2-rc6 v7.2-rc5 v7.2-rc4 v7.2-rc6]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Bert-Karwatzki/drm-amd-display-fix-usage-of-DC_FPU_-BEGIN-END-with-PREEMPT_RT/20260805-170330
base:   next-20260804
patch link:    https://lore.kernel.org/r/20260801071724.12998-1-spasswolf%40web.de
patch subject: [PATCH] drm/amd/display: fix usage of DC_FPU_{BEGIN,END} with PREEMPT_RT
config: loongarch-defconfig (https://download.01.org/0day-ci/archive/20260806/202608061154.QtrglsMo-lkp@xxxxxxxxx/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project bacfe2950f8218268fcc0a8765644ea0c15f0360)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260806/202608061154.QtrglsMo-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608061154.QtrglsMo-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_surface.c:89:2: error: call to undeclared function 'DC_RUN_WITH_PREEMPTION_ENABLED'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      89 |         DC_RUN_WITH_PREEMPTION_ENABLED(plane_state = kvzalloc_obj(*plane_state, GFP_ATOMIC));
         |         ^
   1 error generated.


vim +/DC_RUN_WITH_PREEMPTION_ENABLED +89 drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_surface.c

    82	
    83	/*******************************************************************************
    84	 * Public functions
    85	 ******************************************************************************/
    86	struct dc_plane_state *dc_create_plane_state(const struct dc *dc)
    87	{
    88		struct dc_plane_state *plane_state;
  > 89		DC_RUN_WITH_PREEMPTION_ENABLED(plane_state = kvzalloc_obj(*plane_state, GFP_ATOMIC));
    90	
    91		if (NULL == plane_state)
    92			return NULL;
    93	
    94		kref_init(&plane_state->refcount);
    95		dc_plane_construct(dc->ctx, plane_state);
    96	
    97		return plane_state;
    98	}
    99	

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