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rust: module_param: use pr_warn_once! for null pointer warning

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Replace `pr_warn!` and the accompanying TODO with `pr_warn_once!`, now that
the macro is available.

[ Note: Adarsh Das independently authored an identical patch on the
  rust-for-linux list, but it missed the modules tree. ]

Suggested-by: Adarsh Das <adarshdas950@gmail.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Aaron Tomlin <atomlin@atomlin.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Daniel Gomez <da.gomez@samsung.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Andreas Hindborg 2026-04-27 10:11:35 +02:00 committed by Sami Tolvanen
parent 04e17ca3f7
commit ac2f40107c
1 changed files with 1 additions and 2 deletions
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3
rust/kernel/module_param.rs
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@ -62,8 +62,7 @@ pub trait ModuleParam: Sized + Copy {
// NOTE: If we start supporting arguments without values, val _is_ allowed
// to be null here.
if val.is_null() {
// TODO: Use pr_warn_once available.
crate::pr_warn!("Null pointer passed to `module_param::set_param`");
crate::pr_warn_once!("Null pointer passed to `module_param::set_param`");
return EINVAL.to_errno();
}