Re: [PATCH v4 1/3] rust: device: implement bus_type_raw()

[Greg KH]

On Fri, Mar 21, 2025 at 10:47:53PM +0100, Danilo Krummrich wrote:
> Implement bus_type_raw(), which returns a raw pointer to the device'
> struct bus_type.
> 
> This is useful for bus devices, to implement the following trait.
> 
> 	impl TryFrom<&Device> for &pci::Device
> 
> With this a caller can try to get the bus specific device from a generic
> device in a safe way. try_from() will only succeed if the generic
> device' bus type pointer matches the pointer of the bus' type.
> 
> Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
> Reviewed-by: Benno Lossin <benno.lossin@xxxxxxxxx>
> Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
> ---
>  rust/kernel/device.rs | 10 ++++++++++
>  1 file changed, 10 insertions(+)

Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>