Re: [PATCH 04/10] rust: add bindings for gpio_{in|out} initialization

[Paolo Bonzini]

On Sat, Jan 25, 2025 at 1:32 PM Zhao Liu <zhao1.liu@intel.com> wrote:
> +    fn init_gpio_in<F: for<'a> FnCall<(&'a Self::Target, u32, u32)>>(&self, 
> num_lines: u32, _f: F) {
> +        unsafe extern "C" fn rust_irq_handler<T, F: for<'a> FnCall<(&'a T, u32, 
> u32)>>(
> +            opaque: *mut c_void,
> +            line: c_int,
> +            level: c_int,
> +        ) {
> +            // SAFETY: the opaque was passed as a reference to `T`
> +            F::call((unsafe { &*(opaque.cast::<T>()) }, line as u32, level as 
> u32))
> +        }
> +
> +        let gpio_in_cb: unsafe extern "C" fn(*mut c_void, c_int, c_int) =
> +            rust_irq_handler::<Self::Target, F>;

Please add "let _: () = F::ASSERT_IS_SOME;", which is added by the 
qdev_init_clock_in() patch.

Paolo