Read struct serial_rs485's flag SER_RS485_DELAY_IN_USEC and apply the delay accordingly. Signed-off-by: Martin Kepplinger <martin.kepplinger@xxxxxxxxxxxxx> --- drivers/tty/serial/sc16is7xx.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 635178cf3eed..b0e00b9fb177 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -743,7 +743,13 @@ static void sc16is7xx_tx_proc(struct kthread_work *ws) struct uart_port *port = &(to_sc16is7xx_one(ws, tx_work)->port); if ((port->rs485.flags & SER_RS485_ENABLED) && - (port->rs485.delay_rts_before_send > 0)) + (port->rs485.delay_rts_before_send > 0) && + (port->rs485.flags & SER_RS485_DELAY_IN_USEC)) + usleep_range(port->rs485.delay_rts_before_send, + port->rs485.delay_rts_before_send); + else if ((port->rs485.flags & SER_RS485_ENABLED) && + (port->rs485.delay_rts_before_send > 0) && + !(port->rs485.flags & SER_RS485_DELAY_IN_USEC)) msleep(port->rs485.delay_rts_before_send); sc16is7xx_handle_tx(port); -- 2.20.1
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