drm/amdgpu: remove unsafe optimization to drop preamble ib

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[ Upstream commit 7d9c70d235 ]

Take the situation with gfxoff, the optimization may cause
corrupt CE ram contents. In addition emit_cntxcntl callback
has similar optimization which firmware can handle properly
even for power feature.

Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jiansong Chen 2021-05-13 10:56:50 +08:00 • committed by Greg Kroah-Hartman

parent 3b2b93a485

commit 3da33bf6aa

1 changed files with 1 additions and 10 deletions

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11

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

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