[PATCH 2/4] drm/amdgpu: lower BUG_ON into WARN_ON for AMDGPU_PL_PREEMPT

[Christian König]

That should never happen, but make sure that we only warn instead of
crash.

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 2b0e83e9fa8a..bc10b3f9015a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -203,7 +203,9 @@ static int amdgpu_ttm_map_buffer(struct ttm_buffer_object *bo,
 
 	BUG_ON(adev->mman.buffer_funcs->copy_max_bytes <
 	       AMDGPU_GTT_MAX_TRANSFER_SIZE * 8);
-	BUG_ON(mem->mem_type == AMDGPU_PL_PREEMPT);
+
+	if (WARN_ON(mem->mem_type == AMDGPU_PL_PREEMPT))
+		return -EINVAL;
 
 	/* Map only what can't be accessed directly */
 	if (!tmz && mem->start != AMDGPU_BO_INVALID_OFFSET) {
-- 
2.25.1