linux-kernel - Re: [PATCH v1 1/1] serial: 8250_dma: Convert to use uart_xmit

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Date:   Thu, 22 Sep 2022 16:10:58 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jirislaby@...nel.org>
Subject: Re: [PATCH v1 1/1] serial: 8250_dma: Convert to use
 uart_xmit_advance()

On Fri, Sep 09, 2022 at 12:11:02PM +0300, Andy Shevchenko wrote:
> uart_xmit_advance() provides a common way on how to advance
> the Tx queue. Use it for the sake of unification and robustness.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/tty/serial/8250/8250_dma.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c
> index d99020fd3427..b85c82616e8c 100644
> --- a/drivers/tty/serial/8250/8250_dma.c
> +++ b/drivers/tty/serial/8250/8250_dma.c
> @@ -26,9 +26,7 @@ static void __dma_tx_complete(void *param)
>  
>  	dma->tx_running = 0;
>  
> -	xmit->tail += dma->tx_size;
> -	xmit->tail &= UART_XMIT_SIZE - 1;
> -	p->port.icount.tx += dma->tx_size;
> +	uart_xmit_advance(&p->port, dma->tx_size);
>  
>  	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
>  		uart_write_wakeup(&p->port);
> -- 
> 2.35.1
> 

Breaks the build :(