diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
index eee924dfffa6e1baf08221ee5e7e2cd23937d782..2072f3451e9c2127a076873113292a8ae2b5b9cb 100644
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@ -780,7 +780,10 @@ noinline static void slc_entire_op(const int op)
 
 	write_aux_reg(r, ctrl);
 
-	write_aux_reg(ARC_REG_SLC_INVALIDATE, 1);
+	if (op & OP_INV)	/* Inv or flush-n-inv use same cmd reg */
+		write_aux_reg(ARC_REG_SLC_INVALIDATE, 0x1);
+	else
+		write_aux_reg(ARC_REG_SLC_FLUSH, 0x1);
 
 	/* Make sure "busy" bit reports correct stataus, see STAR 9001165532 */
 	read_aux_reg(r);