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authorStephen Warren <swarren@nvidia.com>2013-08-01 16:08:57 -0600
committerMark Brown <broonie@linaro.org>2013-08-02 11:31:22 +0100
commitb6aa23ccaea1548cfb404b41129717f13443bccf (patch)
tree9f09879e7e5483ce24403c7cf8f994907a293536 /include/linux/spi
parent5ae90d8e467e625e447000cb4335c4db973b1095 (diff)
spi: fix SPI_BIT_MASK so it always fits into 32-bits
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.wu@intel.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'include/linux/spi')
-rw-r--r--include/linux/spi/spi.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 28e440be1c0..c920c2f4dad 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -309,7 +309,7 @@ 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))
/* other constraints relevant to this driver */