[PATCH 1/2] drm/xe/guc: Fix stack_depot usage

[Lucas De Marchi <lucas.demarchi@intel.com>]

Add missing stack_depot_init() call when CONFIG_DRM_XE_DEBUG_GUC is
enabled to fix the following call stack:

	[] BUG: kernel NULL pointer dereference, address: 0000000000000000
	[] Workqueue:  drm_sched_run_job_work [gpu_sched]
	[] RIP: 0010:stack_depot_save_flags+0x172/0x870
	[] Call Trace:
	[]  <TASK>
	[]  fast_req_track+0x58/0xb0 [xe]

Fixes: 16b7e65d299d ("drm/xe/guc: Track FAST_REQ H2Gs to report where errors came from")
Tested-by: Sagar Ghuge <sagar.ghuge@intel.com>
Cc: <stable@vger.kernel.org> # v6.17+
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 drivers/gpu/drm/xe/xe_guc_ct.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c
index 2697d711adb2b..07ae0d601910e 100644
--- a/drivers/gpu/drm/xe/xe_guc_ct.c
+++ b/drivers/gpu/drm/xe/xe_guc_ct.c
@@ -236,6 +236,9 @@ int xe_guc_ct_init_noalloc(struct xe_guc_ct *ct)
 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
 	spin_lock_init(&ct->dead.lock);
 	INIT_WORK(&ct->dead.worker, ct_dead_worker_func);
+#if IS_ENABLED(CONFIG_DRM_XE_DEBUG_GUC)
+	stack_depot_init();
+#endif
 #endif
 	init_waitqueue_head(&ct->wq);
 	init_waitqueue_head(&ct->g2h_fence_wq);

-- 
2.51.2