From: Stephen Warren <swar...@nvidia.com>
On a 64-bit platform, ~0UL fills 64-bits, which causes SPI_BIT_MASK(32)
not to fit into 32 bits. This causes a warning when the result is assigned
to a 32-bit variable. Use ~0U instead to prevent this. This fixes:
drivers/spi/spi-gpio.c: In function 'spi_gpio_probe':
drivers/spi/spi-gpio.c:446:2: warning: large integer implicitly truncated to
unsigned type [-Woverflow]
Reported-by: kbuild test robot <fengguang...@intel.com>
Signed-off-by: Stephen Warren <swar...@nvidia.com>
---
include/linux/spi/spi.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index c28ac12..8515190 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -314,7 +314,7 @@ struct spi_master {
/* bitmask of supported bits_per_word for transfers */
u32 bits_per_word_mask;
#define SPI_BPW_MASK(bits) BIT((bits) - 1)
-#define SPI_BIT_MASK(bits) (((bits) == 32) ? ~0UL : (BIT(bits) - 1))
+#define SPI_BIT_MASK(bits) (((bits) == 32) ? ~0U : (BIT(bits) - 1))
#define SPI_BPW_RANGE_MASK(min, max) (SPI_BIT_MASK(max) - SPI_BIT_MASK(min -
1))
/* limits on transfer speed */
--
1.8.1.5
--
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