1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
index 69f07a9f1277..41235c93e4e9 100644
--- a/include/linux/hw_breakpoint.h
+++ b/include/linux/hw_breakpoint.h
@@ -93,7 +93,7 @@ register_user_hw_breakpoint(struct perf_event_attr *attr,
                             struct task_struct *tsk)    { return NULL; }
 static inline int
 modify_user_hw_breakpoint(struct perf_event *bp,
-                          struct perf_event_attr *attr) { return NULL; }
+                          struct perf_event_attr *attr) { return -ENOSYS; }
 static inline struct perf_event *
 register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
                                 perf_overflow_handler_t  triggered,