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stm32:Serial DMA buffer round off not up

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This commit is contained in:
David Sidrane 2017-05-08 15:54:03 +00:00
parent c64983dbeb
commit 546e7acb99
1 changed files with 3 additions and 1 deletions
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4
arch/arm/src/stm32/stm32_serial.c
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@ -186,8 +186,10 @@
# define CONFIG_STM32_SERIAL_RXDMA_BUFFER_SIZE 32 # define CONFIG_STM32_SERIAL_RXDMA_BUFFER_SIZE 32
# endif # endif
# define RXDMA_MUTIPLE 4 # define RXDMA_MUTIPLE 4
# define RXDMA_MUTIPLE_MASK (RXDMA_MUTIPLE -1)
# define RXDMA_BUFFER_SIZE ((CONFIG_STM32_SERIAL_RXDMA_BUFFER_SIZE \ # define RXDMA_BUFFER_SIZE ((CONFIG_STM32_SERIAL_RXDMA_BUFFER_SIZE \
+ RXDMA_MUTIPLE) & ~(RXDMA_MUTIPLE-1)) + RXDMA_MUTIPLE_MASK) \
& ~RXDMA_MUTIPLE_MASK))
/* DMA priority */ /* DMA priority */