[PATCH] spi: sh-msiof: avoid integer overflow in constants
From: Wolfram Sang
Date: Tue Jan 30 2024 - 04:42:40 EST
cppcheck rightfully warned:
drivers/spi/spi-sh-msiof.c:792:28: warning: Signed integer overflow for expression '7<<29'. [integerOverflow]
sh_msiof_write(p, SIFCTR, SIFCTR_TFWM_1 | SIFCTR_RFWM_1);
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-sh-msiof.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index cfc3b1ddbd22..6f12e4fb2e2e 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -136,14 +136,14 @@ struct sh_msiof_spi_priv {
/* SIFCTR */
#define SIFCTR_TFWM_MASK GENMASK(31, 29) /* Transmit FIFO Watermark */
-#define SIFCTR_TFWM_64 (0 << 29) /* Transfer Request when 64 empty stages */
-#define SIFCTR_TFWM_32 (1 << 29) /* Transfer Request when 32 empty stages */
-#define SIFCTR_TFWM_24 (2 << 29) /* Transfer Request when 24 empty stages */
-#define SIFCTR_TFWM_16 (3 << 29) /* Transfer Request when 16 empty stages */
-#define SIFCTR_TFWM_12 (4 << 29) /* Transfer Request when 12 empty stages */
-#define SIFCTR_TFWM_8 (5 << 29) /* Transfer Request when 8 empty stages */
-#define SIFCTR_TFWM_4 (6 << 29) /* Transfer Request when 4 empty stages */
-#define SIFCTR_TFWM_1 (7 << 29) /* Transfer Request when 1 empty stage */
+#define SIFCTR_TFWM_64 (0UL << 29) /* Transfer Request when 64 empty stages */
+#define SIFCTR_TFWM_32 (1UL << 29) /* Transfer Request when 32 empty stages */
+#define SIFCTR_TFWM_24 (2UL << 29) /* Transfer Request when 24 empty stages */
+#define SIFCTR_TFWM_16 (3UL << 29) /* Transfer Request when 16 empty stages */
+#define SIFCTR_TFWM_12 (4UL << 29) /* Transfer Request when 12 empty stages */
+#define SIFCTR_TFWM_8 (5UL << 29) /* Transfer Request when 8 empty stages */
+#define SIFCTR_TFWM_4 (6UL << 29) /* Transfer Request when 4 empty stages */
+#define SIFCTR_TFWM_1 (7UL << 29) /* Transfer Request when 1 empty stage */
#define SIFCTR_TFUA_MASK GENMASK(26, 20) /* Transmit FIFO Usable Area */
#define SIFCTR_TFUA_SHIFT 20
#define SIFCTR_TFUA(i) ((i) << SIFCTR_TFUA_SHIFT)
--
2.39.2