Re: [PATCH 6/7] serial: imx: update the stop rx,tx procedures

["Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>]

On Fri, Jun 30, 2017 at 02:04:45PM +0200, Romain Perier wrote:
> From: Nandor Han <nandor.han@ge.com>
> 
> According to "Documentation/serial/driver" both procedures should stop
> receiving or sending data. Based on this the procedures should stop the
> activity regardless if DMA is enabled or not.
> 
> This commit updates both imx_stop_{rx|tx} procedures to stop the
> activity and disable the interrupts related to that. In case DMA is used
> the sg buffers are also un-maped.

This unmapping is implicit, becuae imx_stop_rx_dma unmaps since the
previous commit, right?
> 
> Signed-off-by: Nandor Han <nandor.han@ge.com>
> Signed-off-by: Romain Perier <romain.perier@collabora.com>
> ---
>  drivers/tty/serial/imx.c | 39 ++++++++++++++++++++-------------------
>  1 file changed, 20 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
> index 58d6b1c..d5b6e09 100644
> --- a/drivers/tty/serial/imx.c
> +++ b/drivers/tty/serial/imx.c
> @@ -360,6 +360,9 @@ static void imx_port_rts_auto(struct imx_port *sport, unsigned long *ucr2)
>  	*ucr2 |= UCR2_CTSC;
>  }
>  
> +static void imx_stop_rx_dma(struct imx_port *sport);
> +static void imx_stop_tx_dma(struct imx_port *sport);

Is it possible to reshuffle the order of functions to make this forward
declaration redundant?

Best regards
Uwe

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