1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 8e91cf34a9c8..acc52afaf7bf 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1610,7 +1610,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
 {
         if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) {
                 /* TODO: We don't support guest os callchain now */
-                return NULL;
+                return;
         }
 
         perf_callchain_store(entry, regs->ip);
@@ -1663,7 +1663,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
 
         if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) {
                 /* TODO: We don't support guest os callchain now */
-                return NULL;
+                return;
         }
 
         fp = (void __user *)regs->bp;