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The warning is a false positive because the code path which would lead to returning an undefined value can never happen. There is just no way the compiler could know that. I suggest to better initialize the return value directly before the error handling to indicate that when we have reached this point we can return success safely. Regards, Christian. > > Initialize r inside amdgpu_fill_buffer(). > > Reported-by: kernel test robot > Signed-off-by: Souptick Joarder (HPE) > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c > index 414a22dddc78..5fafb223177f 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c > @@ -2089,7 +2089,7 @@ int amdgpu_fill_buffer(struct amdgpu_bo *bo, > struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring; > struct dma_fence *fence = NULL; > struct amdgpu_res_cursor dst; > - int r; > + int r = 0; > > if (!adev->mman.buffer_funcs_enabled) { > DRM_ERROR("Trying to clear memory with ring turned off.\n");