[PATCH] drm/xe: skip register UC debugfs if UC disabled

[Ohad Sharabi]

When working with execlist we should not register the UC debugfs entries.

Accessing those entries when UC is disabled can lead to a kernel crush
(NULL pointer dereference).

Signed-off-by: Ohad Sharabi <osharabi at habana.ai>
---
 drivers/gpu/drm/xe/xe_gt_debugfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_gt_debugfs.c b/drivers/gpu/drm/xe/xe_gt_debugfs.c
index c4b67cf09f8f..bafd55a7fb16 100644
--- a/drivers/gpu/drm/xe/xe_gt_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_debugfs.c
@@ -245,5 +245,6 @@ void xe_gt_debugfs_register(struct xe_gt *gt)
 				 ARRAY_SIZE(debugfs_list),
 				 root, minor);
 
-	xe_uc_debugfs_register(&gt->uc, root);
+	if (xe_device_uc_enabled(xe))
+		xe_uc_debugfs_register(&gt->uc, root);
 }
-- 
2.34.1