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firmware_loader: annotate doctests as no_run

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The doctests of `Firmware` are compile-time only tests, since they
require a proper `Device` and a valid path to a (firmware) blob in order
to do something sane on runtime - we can't satisfy both of those
requirements.

Hence, configure the example as `no_run`.

Unfortunately, the kernel's Rust build system can't consider the
`no_run` attribute yet. Hence, for the meantime, wrap the example code
into a new function and never actually call it.

Fixes: de6582833d ("rust: add firmware abstractions")
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://lore.kernel.org/r/20240708200724.3203-1-dakr@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Danilo Krummrich 2024-07-08 22:07:20 +02:00 committed by Greg Kroah-Hartman
parent 997197b58b
commit 2c61b8c51d
1 changed files with 6 additions and 2 deletions
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8
rust/kernel/firmware.rs
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@ -26,14 +26,18 @@ type FwFunc =
///
/// # Examples
///
/// ```
/// ```no_run
/// # use kernel::{c_str, device::Device, firmware::Firmware};
///
/// # fn no_run() -> Result<(), Error> {
/// # // SAFETY: *NOT* safe, just for the example to get an `ARef<Device>` instance
/// # let dev = unsafe { Device::from_raw(core::ptr::null_mut()) };
///
/// let fw = Firmware::request(c_str!("path/to/firmware.bin"), &dev).unwrap();
/// let fw = Firmware::request(c_str!("path/to/firmware.bin"), &dev)?;
/// let blob = fw.data();
///
/// # Ok(())
/// # }
/// ```
pub struct Firmware(NonNull<bindings::firmware>);