4a6f7cacd5
When the Head to Tail relationship was H < T, then only the tail to end of buffer was sent. The fix is: In the txdma completion to do a second the DMA operation using nbuffer if the nlength is non zero. stm32f7:serial UART5 use actual size UART5 was using the CONFIG_UART5_TXBUFSIZE not the UART5_TXBUFSIZE_ADJUSTED. Since the buffer size was adjusted up, this has no dcache implications. If the UART5_TXBUFSIZE_ADJUSTED is larger then CONFIG_UART5_TXBUFSIZE it will present a larger usable buffer to the system's serial driver. |
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