[PATCH [RT] 01/14] spinlocks: fix preemption feature when PREEMPT_RTis enabled

[Gregory Haskins]

The logic is currently broken so that PREEMPT_RT disables preemptible
spinlock waiters, which is counter intuitive. 

Signed-off-by: Gregory Haskins <ghaskins@xxxxxxxxxx>
---

 kernel/spinlock.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/spinlock.c b/kernel/spinlock.c
index c9bcf1b..b0e7f02 100644
--- a/kernel/spinlock.c
+++ b/kernel/spinlock.c
@@ -117,7 +117,7 @@ EXPORT_SYMBOL(__write_trylock_irqsave);
  * not re-enabled during lock-acquire (which the preempt-spin-ops do):
  */
 #if !defined(CONFIG_PREEMPT) || !defined(CONFIG_SMP) || \
-	defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_PREEMPT_RT)
+	defined(CONFIG_DEBUG_LOCK_ALLOC)
 
 void __lockfunc __read_lock(raw_rwlock_t *lock)
 {

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