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-rw-r--r--include/linux/spinlock_types.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h
index dc5fb69e4de..210549ba4ef 100644
--- a/include/linux/spinlock_types.h
+++ b/include/linux/spinlock_types.h
@@ -85,6 +85,12 @@ typedef struct {
RW_DEP_MAP_INIT(lockname) }
#endif
+/*
+ * SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED defeat lockdep state tracking and
+ * are hence deprecated.
+ * Please use DEFINE_SPINLOCK()/DEFINE_RWLOCK() or
+ * __SPIN_LOCK_UNLOCKED()/__RW_LOCK_UNLOCKED() as appropriate.
+ */
#define SPIN_LOCK_UNLOCKED __SPIN_LOCK_UNLOCKED(old_style_spin_init)
#define RW_LOCK_UNLOCKED __RW_LOCK_UNLOCKED(old_style_rw_init)