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Kernel modules that use C symbols exported via `EXPORT_SYMBOL_NS` must declare this dependency for `modpost` verification. C modules achieve this by using the `MODULE_IMPORT_NS(NAMESPACE)` macro, which embeds an `import_ns=<NAMESPACE>` tag into the `.modinfo` section. The Rust `module!` macro lacked the ability to generate these tags, resulting in build warnings for Rust drivers (like the PWM driver) that call namespaced C functions. Modify the `module!` macro's internal parser (`ModuleInfo`) to accept a new optional field `imports_ns`, which takes an array of namespace strings. Update the code generator (`ModInfoBuilder::emit`) loop to iterate over these strings and emit the corresponding `import_ns=<NAMESPACE>` tags into the `.modinfo` section using the existing `#[link_section]` mechanism. This provides the necessary infrastructure for Rust modules to correctly declare their C namespace dependencies. Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com> Acked-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Elle Rhumsaa <elle@weathered-steel.dev> Acked-by: Daniel Gomez <da.gomez@samsung.com> Link: https://patch.msgid.link/20251028-pwm_fixes-v1-1-25a532d31998@samsung.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>