drm/amdgpu: fix hpd bo size calculation error

the HPD bo size calculation error.
the "mem.size" can't present actual BO size all time.

Signed-off-by: Kevin Wang <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Acked-by: Christian König <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: Kevin Wang

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -1113,7 +1113,7 @@ static int gfx_v10_0_mec_init(struct amdgpu_device *adev)
 		return r;
 	}
 
-	memset(hpd, 0, adev->gfx.mec.hpd_eop_obj->tbo.mem.size);
+	memset(hpd, 0, mec_hpd_size);
 
 	amdgpu_bo_kunmap(adev->gfx.mec.hpd_eop_obj);
 	amdgpu_bo_unreserve(adev->gfx.mec.hpd_eop_obj);

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -1946,7 +1946,7 @@ static int gfx_v9_0_mec_init(struct amdgpu_device *adev)
 		return r;
 	}
 
-	memset(hpd, 0, adev->gfx.mec.hpd_eop_obj->tbo.mem.size);
+	memset(hpd, 0, mec_hpd_size);
 
 	amdgpu_bo_kunmap(adev->gfx.mec.hpd_eop_obj);
 	amdgpu_bo_unreserve(adev->gfx.mec.hpd_eop_obj);