| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 185/342] drm/amdgpu: fix s4 resume | Date | Tue, 01 Mar 2016 23:54:45 +0000 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Flora Cui <Flora.Cui@amd.com>
commit ca19852884c8937eed89560f924f5a34cfcc22af upstream.
No need to re-init asic if it's already been initialized. Skip IB tests since kernel processes are frozen in thaw.
Signed-off-by: Flora Cui <Flora.Cui@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1744,15 +1744,20 @@ int amdgpu_resume_kms(struct drm_device } /* post card */ - amdgpu_atom_asic_init(adev->mode_info.atom_context); + if (!amdgpu_card_posted(adev)) + amdgpu_atom_asic_init(adev->mode_info.atom_context); r = amdgpu_resume(adev); + if (r) + DRM_ERROR("amdgpu_resume failed (%d).\n", r); amdgpu_fence_driver_resume(adev); - r = amdgpu_ib_ring_tests(adev); - if (r) - DRM_ERROR("ib ring test failed (%d).\n", r); + if (resume) { + r = amdgpu_ib_ring_tests(adev); + if (r) + DRM_ERROR("ib ring test failed (%d).\n", r); + } r = amdgpu_late_init(adev); if (r)
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