--- driver/adv_mmap.c.orig	2019-05-27 15:37:05.655080151 -0400
+++ driver/adv_mmap.c	2019-05-27 15:37:14.062322054 -0400
@@ -33,11 +33,16 @@ void adv_vma_close(struct vm_area_struct
 {
 //	printk("%s(%d)\n", __func__, __LINE__);
 }
 
 #if  LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
-int adv_vma_nopage(struct vm_fault *vmf)
+#if  LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0)
+vm_fault_t
+#else
+int
+#endif
+adv_vma_nopage(struct vm_fault *vmf)
 {
 	unsigned long offset;
 	struct adv_vcom * data;
 	struct vm_area_struct *vma = vmf->vma;
 	struct page *page = NULL;