drm/xe/guc: Ensure CT state transitions via STOP before DISABLED

The GuC CT state transition requires moving to the STOP state before
entering the DISABLED state. Update the driver teardown sequence to make
the proper state machine transitions.

Fixes: ee4b32220a6b ("drm/xe/guc: Add devm release action to safely tear down CT")
Cc: stable@vger.kernel.org
Signed-off-by: Zhanjun Dong <zhanjun.dong@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260310225039.1320161-6-zhanjun.dong@intel.com

diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c
index 496c6c77bee603ce7da24f816188f53d29696b53..3b1c03743f83e5571d30449a5eee470d253fb7c6 100644 (file)
--- a/drivers/gpu/drm/xe/xe_guc_ct.c
+++ b/drivers/gpu/drm/xe/xe_guc_ct.c
@@ -352,6 +352,7 @@ static void guc_action_disable_ct(void *arg)
 {
        struct xe_guc_ct *ct = arg;
 
+       xe_guc_ct_stop(ct);
        guc_ct_change_state(ct, XE_GUC_CT_STATE_DISABLED);
 }