Re: [PATCH] rust: kernel: Mark rust_fmt_argument as extern "C"

The rust_fmt_argument function is called from printk() to handle the %pA format specifier.

Since it's called from C, we should mark it extern "C" to make sure it's ABI compatible.

Cc: stable@vger.kernel.org Fixes: 247b365dc8dc ("rust: add `kernel` crate") Signed-off-by: David Gow davidgow@google.com

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Reviewed-by: Vincenzo Palazzo vincenzopalazzodev@gmail.com