Re: [PATCH v8 2/3] rust: io: mem: add a generic iomem abstraction

[Danilo Krummrich <dakr@kernel.org>]

On Fri, May 09, 2025 at 05:29:47PM -0300, Daniel Almeida wrote:
> +impl<const SIZE: usize> ExclusiveIoMem<SIZE> {
> +    /// Creates a new `ExclusiveIoMem` instance.
> +    pub(crate) fn ioremap(resource: &Resource) -> Result<Self> {
> +        let iomem = IoMem::ioremap(resource)?;
> +
> +        let start = resource.start();
> +        let size = resource.size();
> +        let name = resource.name();
> +
> +        let region = resource
> +            .request_region(start, size, name, io::resource::flags::IORESOURCE_MEM)
> +            .ok_or(EBUSY)?;
> +
> +        let iomem = ExclusiveIoMem {
> +            iomem,
> +            _region: region,
> +        };
> +
> +        Ok(iomem)
> +    }
> +
> +    pub(crate) fn new(resource: &Resource, device: &Device) -> Result<Devres<Self>> {
> +        let iomem = Self::ioremap(resource)?;
> +        let devres = Devres::new(device, iomem, GFP_KERNEL)?;

Here and in IoMem, Devres::new() requires a &Device<Bound>.