diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index dd636af81c9b..4296fcb245c9 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -45,8 +45,6 @@
 #define STM_SAI_B_ID		0x1
 
 #define STM_SAI_IS_SUB_A(x)	((x)->id == STM_SAI_A_ID)
-#define STM_SAI_IS_SUB_B(x)	((x)->id == STM_SAI_B_ID)
-#define STM_SAI_BLOCK_NAME(x)	(((x)->id == STM_SAI_A_ID) ? "A" : "B")
 
 #define SAI_SYNC_NONE		0x0
 #define SAI_SYNC_INTERNAL	0x1