Commit drm/ttm: ttm object security fixes for render nodes introduced a
regression where, if a TTM object was opened multiple times from the same
open file, the caller would spin uninterruptibly in the kernel.
Fix this.
Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
Reviewed-by: Jakob Bornecrantz <jakob@xxxxxxxxxx>
---
drivers/gpu/drm/ttm/ttm_object.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c
index 3707985..53b51c4 100644
--- a/drivers/gpu/drm/ttm/ttm_object.c
+++ b/drivers/gpu/drm/ttm/ttm_object.c
@@ -292,7 +292,7 @@ int ttm_ref_object_add(struct ttm_object_file *tfile,
if (ret == 0) {
ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
- if (!kref_get_unless_zero(&ref->kref)) {
+ if (kref_get_unless_zero(&ref->kref)) {
rcu_read_unlock();
break;
}
--
1.7.10.4
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