[PATCH 2/2] drm/xe: Add a WARN_ON for NULL job in xe_sync_entry_signal

[Nirmoy Das]

Add a warn for NULL job when sync->type is
DRM_XE_SYNC_TYPE_USER_FENCE. This should be a programming
error and should never happen so warn and let the kernel crash
if that ever happens.

Cc: Matthew Auld <matthew.auld at intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das at intel.com>
---
 drivers/gpu/drm/xe/xe_sync.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/xe/xe_sync.c b/drivers/gpu/drm/xe/xe_sync.c
index 02c9577fe418..2b45950aa0af 100644
--- a/drivers/gpu/drm/xe/xe_sync.c
+++ b/drivers/gpu/drm/xe/xe_sync.c
@@ -255,6 +255,7 @@ void xe_sync_entry_signal(struct xe_sync_entry *sync, struct xe_sched_job *job,
 			dma_fence_put(fence);
 		}
 	} else if (sync->type == DRM_XE_SYNC_TYPE_USER_FENCE) {
+		XE_WARN_ON(job);
 		job->user_fence.used = true;
 		job->user_fence.addr = sync->addr;
 		job->user_fence.value = sync->timeline_value;
-- 
2.42.0