diff --git a/include/osdep_service_linux.h b/include/osdep_service_linux.h
index 6f27da2..7fdd31f 100644
--- a/include/osdep_service_linux.h
+++ b/include/osdep_service_linux.h
@@ -144,11 +144,7 @@
 
 
 typedef struct	semaphore _sema;
-#ifdef CONFIG_PREEMPT_RT
-typedef	raw_spinlock_t	_lock;
-#else
 typedef	spinlock_t	_lock;
-#endif
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
 	typedef struct mutex		_mutex;
 #else
@@ -232,23 +228,6 @@ __inline static _list	*get_list_head(_queue	*queue)
 	((type *)((char *)(ptr)-(SIZE_T)(&((type *)0)->member)))
 
 
-#ifdef CONFIG_PREEMPT_RT
-__inline static void _enter_critical(_lock *plock, unsigned long *pirqL)
-{
-	raw_spin_lock_irqsave(plock, *pirqL);
-}
-
-__inline static void _exit_critical(_lock *plock, unsigned long *pirqL)
-{
-	raw_spin_unlock_irqrestore(plock, *pirqL);
-}
-
-__inline static void _enter_critical_ex(_lock *plock, unsigned long *pirqL)
-{
-	raw_spin_lock_irqsave(plock, *pirqL);
-}
-
-#else
 __inline static void _enter_critical(_lock *plock, _irqL *pirqL)
 {
 	spin_lock_irqsave(plock, *pirqL);
@@ -263,7 +242,6 @@ __inline static void _enter_critical_ex(_lock *plock, _irqL *pirqL)
 {
 	spin_lock_irqsave(plock, *pirqL);
 }
-#endif
 
 __inline static void _exit_critical_ex(_lock *plock, _irqL *pirqL)
 {