diff -Nur a/kernel/nvidia/os-interface.c b/kernel/nvidia/os-interface.c
--- a/kernel/nvidia/os-interface.c	2018-08-22 01:55:22.000000000 +0100
+++ b/kernel/nvidia/os-interface.c	2019-02-10 03:28:33.359055441 +0000
@@ -16,6 +16,8 @@
 
 #include "nv-gpu-numa.h"
 
+#include <linux/version.h>
+
 #define MAX_ERROR_STRING 512
 static char nv_error_string[MAX_ERROR_STRING];
 nv_spinlock_t nv_error_string_lock;
@@ -1697,7 +1699,12 @@
 
 struct nv_ipmi_softc
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
+    struct ipmi_user   *p_user;     // ptr to ipmi_msghandler user structure
+#else
     ipmi_user_t         p_user;     // ptr to ipmi_msghandler user structure
+#endif
+
     spinlock_t          msg_lock;
     struct list_head    msgs;
     NvU32               seqNum;     //request sequence number
@@ -1706,7 +1713,11 @@
 static inline int
 nv_ipmi_set_my_address
 (
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
+    struct ipmi_user *user,
+#else
     ipmi_user_t     user,
+#endif
     unsigned char   address
 )
 {