linux-kernel - Re: [PATCH] serial: atmel: Use platform_get

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Date:   Thu, 16 Dec 2021 00:37:36 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Richard Genoud <richard.genoud@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] serial: atmel: Use platform_get_irq() to get the
 interrupt

Hello Rob,

On 15/12/2021 16:48:31-0600, Rob Herring wrote:
> Accessing platform device resources directly has long been deprecated for
> DT as IRQ resources may not be available at device creation time. Drivers
> continuing to use static IRQ resources is blocking removing the static setup
> from the DT core code.
> 
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
>  drivers/tty/serial/atmel_serial.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
> index 2c99a47a2535..9e57bfe523cf 100644
> --- a/drivers/tty/serial/atmel_serial.c
> +++ b/drivers/tty/serial/atmel_serial.c
> @@ -2479,7 +2479,7 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port,
>  	port->fifosize		= 1;
>  	port->dev		= &pdev->dev;
>  	port->mapbase		= mpdev->resource[0].start;

Shouldn't you fix that one at the same time?

> -	port->irq		= mpdev->resource[1].start;
> +	port->irq		= platform_get_irq(mpdev, 0);
>  	port->rs485_config	= atmel_config_rs485;
>  	port->iso7816_config	= atmel_config_iso7816;
>  	port->membase		= NULL;
> -- 
> 2.32.0
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com