Messages in this thread | | | Date | Thu, 4 Aug 2022 08:21:44 +0200 | Subject | Re: [PATCH] tty: serial: lpuart: disable flow control when wait transmit engine complete | From | Jiri Slaby <> |
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On 03. 08. 22, 3:55, Sherry Sun wrote: > When TX fifo has dirty data, user initialize the port and wait transmit > engine complete, it should disable the flow control, otherwise tx fifo > never be empty.
Sorry I cannot parse the above. Care to rephrase? (And maybe spellcheck?)
> Signed-off-by: Sherry Sun <sherry.sun@nxp.com> > --- > drivers/tty/serial/fsl_lpuart.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c > index fc7d235a1e27..f0fccd2ff7ac 100644 > --- a/drivers/tty/serial/fsl_lpuart.c > +++ b/drivers/tty/serial/fsl_lpuart.c > @@ -2172,6 +2172,7 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios, > uart_update_timeout(port, termios->c_cflag, baud); > > /* wait transmit engin complete */ > + lpuart32_write(&sport->port, 0, UARTMODIR); > lpuart32_wait_bit_set(&sport->port, UARTSTAT, UARTSTAT_TC); > > /* disable transmit and receive */
thanks, -- js suse labs
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