+#ifndef CAN_WITH_RTL
+/* Standard LINUX kernel */
+
+#define can_spinlock_t spinlock_t
+#define can_spin_irqflags_t unsigned long
+#define can_spin_lock spin_lock
+#define can_spin_unlock spin_unlock
+#define can_spin_lock_irqsave spin_lock_irqsave
+#define can_spin_unlock_irqrestore spin_unlock_irqrestore
+#define can_spin_lock_init spin_lock_init
+
+#if defined(CONFIG_PREEMPT) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
+#define can_preempt_disable preempt_disable
+#define can_preempt_enable preempt_enable
+#else /*CONFIG_PREEMPT*/
+#define can_preempt_disable() do { } while (0)
+#define can_preempt_enable() do { } while (0)
+#endif /*CONFIG_PREEMPT*/
+
+#define can_enable_irq enable_irq
+#define can_disable_irq disable_irq
+
+#define can_printk printk
+
+#else /*CAN_WITH_RTL*/
+
+#define can_spinlock_t rtl_spinlock_t
+#define can_spin_irqflags_t rtl_irqstate_t
+#define can_spin_lock rtl_spin_lock
+#define can_spin_unlock rtl_spin_unlock
+#define can_spin_lock_irqsave rtl_spin_lock_irqsave
+#define can_spin_unlock_irqrestore rtl_spin_unlock_irqrestore
+#define can_spin_lock_init rtl_spin_lock_init
+
+#define can_preempt_disable() do { } while (0)
+#define can_preempt_enable() do { } while (0)
+
+#define can_enable_irq rtl_hard_enable_irq
+#define can_disable_irq rtl_hard_disable_irq
+
+#define can_printk rtl_printf
+
+/*
+ * terrible hack to test rtl_file private_data concept, ugh !!!
+ * this would result in crash on architectures, where
+ * sizeof(int) < sizeof(void *)
+ */
+#define can_set_rtl_file_private_data(fptr, p) do{ fptr->f_minor=(long)(p); } while(0)
+#define can_get_rtl_file_private_data(fptr) ((void*)((fptr)->f_minor))
+
+extern can_spinlock_t can_irq_manipulation_lock;
+
+#endif /*CAN_WITH_RTL*/
+