1 files changed, 7 insertions, 2 deletions

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index e648ba4f70e0..51633d74a21e 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -845,9 +845,14 @@ static int rb_tail_page_update(struct ring_buffer_per_cpu *cpu_buffer,
                  * This will only succeed if an interrupt did
                  * not come in and change it. In which case, we
                  * do not want to modify it.
+                 *
+                 * We add (void) to let the compiler know that we do not care
+                 * about the return value of these functions. We use the
+                 * cmpxchg to only update if an interrupt did not already
+                 * do it for us. If the cmpxchg fails, we don't care.
                  */
-                local_cmpxchg(&next_page->write, old_write, val);
-                local_cmpxchg(&next_page->entries, old_entries, eval);
+                (void)local_cmpxchg(&next_page->write, old_write, val);
+                (void)local_cmpxchg(&next_page->entries, old_entries, eval);
 
                 /*
                  * No need to worry about races with clearing out the commit.