drm/amdgpu: drop the busy wait for GMC v9 TLB invalidations

This code is not performance critical.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-10-25 10:50:42 +02:00 • committed by Alex Deucher
commit 396557b03c