This patch series is an attempt to simplify rs485 implementation in drivers by moving the following tasks out of the drivers into the serial core: - ensure sane RTS settings: in case of an invalid configuration (both RTS after send and RTS on send set or both unset) enable RTS on send and disable RTS after send - nullify the padding field of the serial_rs485 struct before it is returned to userspace - copy the configuration stored in the serial_rs485 struct to the port configuration if setting the configuration in the driver was successfull - limit the RTS delay to 100ms Redundant code has been removed from the following drivers for now: - atmel - fsl_lpuart - amba - imx - max310x - omap-serial - sc16is7xx - stm32-usart The code has been tested with the amba pl011 driver. This series applies against tty-testing.
