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In uart_set_rs485_config() the serial core already clamps the RTS delays. It also assigns the passed serial_rs485 struct to the uart port. So remove these tasks from the drivers rs485_config() function to avoid redundancy. Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de> Link: https://lore.kernel.org/r/20220410104642.32195-6-LinoSanfilippo@gmx.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>