1 files changed, 6 insertions, 1 deletions

diff --git a/lib/kernel_lock.c b/lib/kernel_lock.c
index e713e86811ae..e0fdfddb406e 100644
--- a/lib/kernel_lock.c
+++ b/lib/kernel_lock.c
@@ -177,7 +177,12 @@ static inline void __lock_kernel(void)
 
 static inline void __unlock_kernel(void)
 {
-        spin_unlock(&kernel_flag);
+        /*
+         * the BKL is not covered by lockdep, so we open-code the
+         * unlocking sequence (and thus avoid the dep-chain ops):
+         */
+        _raw_spin_unlock(&kernel_flag);
+        preempt_enable();
 }
 
 /*