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-rw-r--r--rust/kernel/print.rs6
1 files changed, 5 insertions, 1 deletions
diff --git a/rust/kernel/print.rs b/rust/kernel/print.rs
index 30103325696d..8009184bf6d7 100644
--- a/rust/kernel/print.rs
+++ b/rust/kernel/print.rs
@@ -18,7 +18,11 @@ use crate::bindings;
// Called from `vsprintf` with format specifier `%pA`.
#[no_mangle]
-unsafe fn rust_fmt_argument(buf: *mut c_char, end: *mut c_char, ptr: *const c_void) -> *mut c_char {
+unsafe extern "C" fn rust_fmt_argument(
+ buf: *mut c_char,
+ end: *mut c_char,
+ ptr: *const c_void,
+) -> *mut c_char {
use fmt::Write;
// SAFETY: The C contract guarantees that `buf` is valid if it's less than `end`.
let mut w = unsafe { RawFormatter::from_ptrs(buf.cast(), end.cast()) };