linux-kernel - Re: [PATCH v3 14/14] serial: liteuart: move polling putchar() function

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Date:   Tue, 15 Nov 2022 18:16:57 +0200 (EET)
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     Gabriel Somlo <gsomlo@...il.com>
cc:     LKML <linux-kernel@...r.kernel.org>,
        linux-serial <linux-serial@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>, kgugala@...micro.com,
        mholenko@...micro.com, joel@....id.au,
        david.abdurachmanov@...il.com, florent@...oy-digital.fr,
        geert@...ux-m68k.org
Subject: Re: [PATCH v3 14/14] serial: liteuart: move polling putchar()
 function

On Sat, 12 Nov 2022, Gabriel Somlo wrote:

> The polling liteuart_putchar() function is only called from methods
> conditionally enabled by CONFIG_SERIAL_LITEUART_CONSOLE. Move its
> definition closer to the console code where it is dependent on the
> same config option.
> 
> Signed-off-by: Gabriel Somlo <gsomlo@...il.com>
> ---
>  drivers/tty/serial/liteuart.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
> index 307c27398e30..767c356e60c9 100644
> --- a/drivers/tty/serial/liteuart.c
> +++ b/drivers/tty/serial/liteuart.c
> @@ -69,14 +69,6 @@ static struct uart_driver liteuart_driver = {
>  #endif
>  };
>  
> -static void liteuart_putchar(struct uart_port *port, unsigned char ch)
> -{
> -	while (litex_read8(port->membase + OFF_TXFULL))
> -		cpu_relax();
> -
> -	litex_write8(port->membase + OFF_RXTX, ch);
> -}
> -
>  static void liteuart_stop_tx(struct uart_port *port)
>  {
>  	if (port->irq) {
> @@ -389,6 +381,14 @@ static struct platform_driver liteuart_platform_driver = {
>  
>  #ifdef CONFIG_SERIAL_LITEUART_CONSOLE
>  
> +static void liteuart_putchar(struct uart_port *port, unsigned char ch)
> +{
> +	while (litex_read8(port->membase + OFF_TXFULL))
> +		cpu_relax();
> +
> +	litex_write8(port->membase + OFF_RXTX, ch);
> +}
> +
>  static void liteuart_console_write(struct console *co, const char *s,
>  	unsigned int count)
>  {

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>


-- 
 i.