drm/amdgpu: pin the csb buffer on hw init for gfx v8

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Without this pin, the csb buffer will be filled with inconsistent
data after S3 resume. And that will causes gfx hang on gfxoff
exit since this csb will be executed then.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Tested-by: Paul Gover <pmw.gover@yahoo.co.uk>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Likun Gao 2019-08-02 15:18:57 +08:00 • committed by Alex Deucher

parent caff0e6654

commit 1f288afc2c

1 changed files with 40 additions and 0 deletions

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drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

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