Re: [PATCH v2 2/3] tty: serial: 8250: Add loongson uart driver support

From: Krzysztof Kozlowski
Date: Fri Aug 09 2024 - 01:57:26 EST


On 07/08/2024 10:24, 郑豪威 wrote:
>>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>>> + if (!res)
>>> + return -ENODEV;
>>> +
>>> + port->membase = devm_ioremap(&pdev->dev, res->start, resource_size(res));
>>> + if (!port->membase)
>>> + return -ENOMEM;
>>> +
>> Use wrapper combining both calls.
>
> I got it, did you mean like this?
>
> +    res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +    if (!res)
> +        return -ENODEV;
> +
> +    port->mapbase = res->start;
> +    port->mapsize = resource_size(res);
> +
> +    port->membase = devm_ioremap(&pdev->dev, port->mapbase, port->mapsize);
> +    if (!port->membase)
>  +       return -ENOMEM;

I still see two calls, so how are they combined? Just open any other
file and see how it is done there.


Best regards,
Krzysztof