linux-kernel - [PATCH] rust: opp: Make the doctest example depend on CONFIG

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Message-Id: <a80bfedcb4d94531dc27d3b48062db5042078e88.1748237646.git.viresh.kumar@linaro.org>
Date: Mon, 26 May 2025 11:05:03 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <vireshk@...nel.org>,
	Nishanth Menon <nm@...com>,
	Stephen Boyd <sboyd@...nel.org>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>
Cc: Viresh Kumar <viresh.kumar@...aro.org>,
	linux-pm@...r.kernel.org,
	Vincent Guittot <vincent.guittot@...aro.org>,
	kernel test robot <lkp@...el.com>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] rust: opp: Make the doctest example depend on CONFIG_OF

The doctest example uses a function only available for CONFIG_OF and so
the build with doc tests fails when it isn't enabled.

  error[E0599]: no function or associated item named `from_of_cpumask`
  found for struct `rust_doctest_kernel_alloc_kbox_rs_4::kernel::opp::Table`
  in the current scope

Fix this by making the doctest depend on CONFIG_OF.

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505260856.ZQWHW2xT-lkp@intel.com/
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
Rafael,

Please apply this directly, if no one objects to it. Thanks.

 rust/kernel/opp.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rust/kernel/opp.rs b/rust/kernel/opp.rs
index 212555dacd45..c2bdc11f3999 100644
--- a/rust/kernel/opp.rs
+++ b/rust/kernel/opp.rs
@@ -582,6 +582,7 @@ extern "C" fn config_regulators(
 /// use kernel::opp::Table;
 /// use kernel::types::ARef;
 ///
+/// #[cfg(CONFIG_OF)]
 /// fn get_table(dev: &ARef<Device>, mask: &mut Cpumask, freq: Hertz) -> Result<Table> {
 ///     let mut opp_table = Table::from_of_cpumask(dev, mask)?;
 ///
-- 
2.31.1.272.g89b43f80a514