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drm/xe/guc: Synchronize Dead CT worker with unbind

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Cancel and wait for any Dead CT worker to complete before continuing
with device unbinding. Else the worker will end up using resources freed
by the undind operation.

Cc: Zhanjun Dong <zhanjun.dong@intel.com>
Fixes: d2c5a5a926 ("drm/xe/guc: Dead CT helper")
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20251103123144.3231829-6-balasubramani.vivekanandan@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
(cherry picked from commit 4926713391)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
This commit is contained in:
Balasubramani Vivekanandan 2025-11-03 18:01:47 +05:30 committed by Lucas De Marchi
parent 6146a0f1df
commit 95af8f4fdc
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/xe/xe_guc_ct.c
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@ -200,6 +200,9 @@ static void guc_ct_fini(struct drm_device *drm, void *arg)
{
struct xe_guc_ct *ct = arg;
#if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
cancel_work_sync(&ct->dead.worker);
#endif
ct_exit_safe_mode(ct);
destroy_workqueue(ct->g2h_wq);
xa_destroy(&ct->fence_lookup);