diff options
Diffstat (limited to 'lib/kernel_lock.c')
| -rw-r--r-- | lib/kernel_lock.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/kernel_lock.c b/lib/kernel_lock.c index cb5490ec00f2..e0fdfddb406e 100644 --- a/lib/kernel_lock.c +++ b/lib/kernel_lock.c @@ -14,7 +14,7 @@ * The 'big kernel semaphore' * * This mutex is taken and released recursively by lock_kernel() - * and unlock_kernel(). It is transparently dropped and reaquired + * and unlock_kernel(). It is transparently dropped and reacquired * over schedule(). It is used to protect legacy code that hasn't * been migrated to a proper locking design yet. * @@ -92,7 +92,7 @@ void __lockfunc unlock_kernel(void) * The 'big kernel lock' * * This spinlock is taken and released recursively by lock_kernel() - * and unlock_kernel(). It is transparently dropped and reaquired + * and unlock_kernel(). It is transparently dropped and reacquired * over schedule(). It is used to protect legacy code that hasn't * been migrated to a proper locking design yet. * @@ -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(); } /* |