Commit b2a7e973 authored Apr 13, 2020 by Prike Liang Committed by Alex Deucher Apr 14, 2020

drm/amdgpu: fix the hw hang during perform system reboot and reset



The system reboot failed as some IP blocks enter power gate before perform
hw resource destory. Meanwhile use unify interface to set device CGPG to ungate
state can simplify the amdgpu poweroff or reset ungate guard.

Fixes: 487eca11 ("drm/amdgpu: fix gfx hang during suspend with video playback (v2)")
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Tested-by: Mengbing Wang <Mengbing.Wang@amd.com>
Tested-by: Paul Menzel <pmenzel@molgen.mpg.de>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

parent 028cfb24

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

+2 −0

Original line number	Diff line number	Diff line
		@@ -2356,6 +2356,8 @@ static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev)
		{
		int i, r;

		amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
		amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);

		for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
		if (!adev->ip_blocks[i].status.valid)

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