--- dahdi-linux-2.11.1/drivers/dahdi/opvxa1200/base.c	2017-11-06 22:07:41.420028793 +0000
+++ dahdi-linux-2.11.1/drivers/dahdi/opvxa1200/base.c	2017-11-07 02:35:44.340098289 +0000
@@ -100,8 +100,13 @@ 
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/moduleparam.h>
+#include <linux/version.h>
 #include <asm/io.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
+#include <linux/nmi.h>
+#else
 #include <linux/sched.h>
+#endif
 #include "proslic.h"
    
 /* MiaoLin debug start */