linux-kernel - Re: [PATCH v1 1/1] serial: liteuart: Remove a copy of UART id in private structure

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Date:   Mon, 23 Jan 2023 15:06:44 -0500
From:   "Gabriel L. Somlo" <gsomlo@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Karol Gugala <kgugala@...micro.com>,
        Mateusz Holenko <mholenko@...micro.com>,
        Joel Stanley <joel@....id.au>
Subject: Re: [PATCH v1 1/1] serial: liteuart: Remove a copy of UART id in
 private structure

On Mon, Jan 23, 2023 at 09:26:04PM +0200, Andy Shevchenko wrote:
> The struct liteuart_port keeps tracking of UART ID which is also
> saved in the struct uart_port as line member. Drop the former one
> and use the latter everywhere.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
> 
> Depends on
> https://lore.kernel.org/linux-serial/20230123191741.79751-1-andriy.shevchenko@linux.intel.com/
> 
>  drivers/tty/serial/liteuart.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
> index 562892395570..80de3a42b67b 100644
> --- a/drivers/tty/serial/liteuart.c
> +++ b/drivers/tty/serial/liteuart.c
> @@ -46,7 +46,6 @@
>  struct liteuart_port {
>  	struct uart_port port;
>  	struct timer_list timer;
> -	u32 id;
>  	u8 irq_reg;
>  };
>  
> @@ -314,7 +313,6 @@ static int liteuart_probe(struct platform_device *pdev)
>  	if (ret)
>  		return ret;
>  
> -	uart->id = dev_id;
>  	/* values not from device tree */
>  	port->dev = &pdev->dev;
>  	port->iotype = UPIO_MEM;
> @@ -334,7 +332,7 @@ static int liteuart_probe(struct platform_device *pdev)
>  	return 0;
>  
>  err_erase_id:
> -	xa_erase(&liteuart_array, uart->id);
> +	xa_erase(&liteuart_array, dev_id);
>  
>  	return ret;
>  }
> @@ -342,10 +340,10 @@ static int liteuart_probe(struct platform_device *pdev)
>  static int liteuart_remove(struct platform_device *pdev)
>  {
>  	struct uart_port *port = platform_get_drvdata(pdev);
> -	struct liteuart_port *uart = to_liteuart_port(port);
> +	unsigned int line = port->line;
>  
>  	uart_remove_one_port(&liteuart_driver, port);
> -	xa_erase(&liteuart_array, uart->id);
> +	xa_erase(&liteuart_array, line);
>  
>  	return 0;
>  }

Nice, thanks!

Reviewed-by: Gabriel Somlo <gsomlo@...il.com>

> -- 
> 2.39.0
>