On 2021-09-15 16:11, Andrey Grodzovsky wrote:
> Why:
> DC core is being released from DM before it's referenced
> from hpd_rx wq destruction code.
>
> How: Move hpd_rx destruction before DC core destruction.
>
> Signed-off-by: Andrey Grodzovsky <andrey.grodzov...@amd.com>
Reviewed-by: Harry Wentland <harry.wentl...@amd.com>
Harry
> ---
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 24 +++++++++----------
> 1 file changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 5d3679bd6b29..1c0547bb09de 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -1572,6 +1572,18 @@ static void amdgpu_dm_fini(struct amdgpu_device *adev)
> &adev->dm.dmub_bo_gpu_addr,
> &adev->dm.dmub_bo_cpu_addr);
>
> + if (adev->dm.hpd_rx_offload_wq) {
> + for (i = 0; i < adev->dm.dc->caps.max_links; i++) {
> + if (adev->dm.hpd_rx_offload_wq[i].wq) {
> +
> destroy_workqueue(adev->dm.hpd_rx_offload_wq[i].wq);
> + adev->dm.hpd_rx_offload_wq[i].wq = NULL;
> + }
> + }
> +
> + kfree(adev->dm.hpd_rx_offload_wq);
> + adev->dm.hpd_rx_offload_wq = NULL;
> + }
> +
> /* DC Destroy TODO: Replace destroy DAL */
> if (adev->dm.dc)
> dc_destroy(&adev->dm.dc);
> @@ -1590,18 +1602,6 @@ static void amdgpu_dm_fini(struct amdgpu_device *adev)
> adev->dm.freesync_module = NULL;
> }
>
> - if (adev->dm.hpd_rx_offload_wq) {
> - for (i = 0; i < adev->dm.dc->caps.max_links; i++) {
> - if (adev->dm.hpd_rx_offload_wq[i].wq) {
> -
> destroy_workqueue(adev->dm.hpd_rx_offload_wq[i].wq);
> - adev->dm.hpd_rx_offload_wq[i].wq = NULL;
> - }
> - }
> -
> - kfree(adev->dm.hpd_rx_offload_wq);
> - adev->dm.hpd_rx_offload_wq = NULL;
> - }
> -
> mutex_destroy(&adev->dm.audio_lock);
> mutex_destroy(&adev->dm.dc_lock);
>
>
