1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/misc/sgi-gru/gru_instructions.h b/drivers/misc/sgi-gru/gru_instructions.h
index e033b6ce4a3f..32f358d9f429 100644
--- a/drivers/misc/sgi-gru/gru_instructions.h
+++ b/drivers/misc/sgi-gru/gru_instructions.h
@@ -325,6 +325,7 @@ static inline void gru_flush_cache(void *p)
 static inline void gru_start_instruction(struct gru_instruction *ins, int op32)
 {
         gru_ordered_store_int(ins, op32);
+        mb();
         gru_flush_cache(ins);
 }