rust: usb: use `Option<&IdInfo>` for device ID info

It is possible that ID without driver_data will be passed to the driver,
e.g. `new_id` is used to dynamically create a new ID without data.
Therefore, the driver must be able to handle the case where `driver_data`
is 0. Thus, update the `probe` functions to get `Option`.

The current code cannot tell if the info does not exist or is the first
entry; however this will be achievable once the code is updated to use a
`&'static IdInfo` pointer instead of indices.

Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260629-id_info-v2-4-56fccbe9c5ef@garyguo.net
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

0 files changed, 0 insertions, 0 deletions