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    Subject[PATCH 5.4 033/177] drm/amdgpu/vcn2.5: add cancel_delayed_work_sync before power gate
    Date
    From: James Zhu <James.Zhu@amd.com>

    commit 2fb536ea42d557f39f70c755f68e1aa1ad466c55 upstream.

    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
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
    +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
    @@ -302,6 +302,8 @@ static int vcn_v2_5_hw_fini(void *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;

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