The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 4a62542ae064e3b645d6bbf2295a6c05136956c6 Mon Sep 17 00:00:00 2001

From: James Zhu James.Zhu@amd.com Date: Mon, 17 May 2021 16:39:17 -0400 Subject: [PATCH] drm/amdgpu/vcn3: add cancel_delayed_work_sync before power gate MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

Add cancel_delayed_work_sync before set power gating state to avoid race condition issue when power gating.

Signed-off-by: James Zhu James.Zhu@amd.com Reviewed-by: Leo Liu leo.liu@amd.com Acked-by: Christian König christian.koenig@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c index 14470da52113..3b23de996db2 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c @@ -372,15 +372,14 @@ static int vcn_v3_0_hw_init(void *handle) static int vcn_v3_0_hw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; - struct amdgpu_ring *ring; int i;

+ cancel_delayed_work_sync(&adev->vcn.idle_work); + for (i = 0; i < adev->vcn.num_vcn_inst; ++i) { if (adev->vcn.harvest_config & (1 << i)) continue;

- ring = &adev->vcn.inst[i].ring_dec; - if (!amdgpu_sriov_vf(adev)) { if ((adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) || (adev->vcn.cur_state != AMD_PG_STATE_GATE &&