diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h
index 1e1edbd152673e8fc99417fee5d685d0b441036a..fe7108bc022a495a3e17b21cb44f10f0e000fc29 100644
--- a/drivers/tty/serial/sh-sci.h
+++ b/drivers/tty/serial/sh-sci.h
@@ -54,10 +54,10 @@ enum {
 
 #define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)
 
-#define SCI_RDxF_CLEAR	~(SCI_RESERVED | SCI_RDRF)
-#define SCI_ERROR_CLEAR	~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER)
-#define SCI_TDxE_CLEAR	~(SCI_RESERVED | SCI_TEND | SCI_TDRE)
-#define SCI_BREAK_CLEAR	~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER)
+#define SCI_RDxF_CLEAR	(u32)(~(SCI_RESERVED | SCI_RDRF))
+#define SCI_ERROR_CLEAR	(u32)(~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER))
+#define SCI_TDxE_CLEAR	(u32)(~(SCI_RESERVED | SCI_TEND | SCI_TDRE))
+#define SCI_BREAK_CLEAR	(u32)(~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER))
 
 /* SCxSR (Serial Status Register) on SCIF, SCIFA, SCIFB, HSCIF */
 #define SCIF_ER		BIT(7)	/* Receive Error */
@@ -76,10 +76,10 @@ enum {
 
 #define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_BRK | SCIF_ER)
 
-#define SCIF_RDxF_CLEAR		~(SCIF_DR | SCIF_RDF)
-#define SCIF_ERROR_CLEAR	~(SCIFA_ORER | SCIF_PER | SCIF_FER | SCIF_ER)
-#define SCIF_TDxE_CLEAR		~(SCIF_TDFE)
-#define SCIF_BREAK_CLEAR	~(SCIF_PER | SCIF_FER | SCIF_BRK)
+#define SCIF_RDxF_CLEAR		(u32)(~(SCIF_DR | SCIF_RDF))
+#define SCIF_ERROR_CLEAR	(u32)(~(SCIFA_ORER | SCIF_PER | SCIF_FER | SCIF_ER))
+#define SCIF_TDxE_CLEAR		(u32)(~(SCIF_TDFE))
+#define SCIF_BREAK_CLEAR	(u32)(~(SCIF_PER | SCIF_FER | SCIF_BRK))
 
 /* SCFCR (FIFO Control Register) */
 #define SCFCR_MCE	BIT(3)	/* Modem Control Enable */