gfxhub registers are part of gfx IP and should not need to be changed. Doing so without disabling gfxoff can hang the gfx IP.
v2: add comments explaining why we can skip the interrupt control for S0i3 Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> --- drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c index 4326078689cd..5e0018fe7e7d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c @@ -64,13 +64,25 @@ gmc_v11_0_vm_fault_interrupt_state(struct amdgpu_device *adev, /* MM HUB */ amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_MMHUB_0, false); /* GFX HUB */ - amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_GFXHUB_0, false); + /* This works because this interrupt is only + * enabled at init/resume and disabled in + * fini/suspend, so the overall state doesn't + * change over the course of suspend/resume. + */ + if (!adev->in_s0ix) + amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_GFXHUB_0, false); break; case AMDGPU_IRQ_STATE_ENABLE: /* MM HUB */ amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_MMHUB_0, true); /* GFX HUB */ - amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_GFXHUB_0, true); + /* This works because this interrupt is only + * enabled at init/resume and disabled in + * fini/suspend, so the overall state doesn't + * change over the course of suspend/resume. + */ + if (!adev->in_s0ix) + amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_GFXHUB_0, true); break; default: break; -- 2.38.1