diff --git a/rust/helpers/pwm.c b/rust/helpers/pwm.c
index d75c58886368..eb24d2ea8e74 100644
--- a/rust/helpers/pwm.c
+++ b/rust/helpers/pwm.c
@@ -4,17 +4,17 @@
 
 #include <linux/pwm.h>
 
-struct device *rust_helper_pwmchip_parent(const struct pwm_chip *chip)
+__rust_helper struct device *rust_helper_pwmchip_parent(const struct pwm_chip *chip)
 {
 	return pwmchip_parent(chip);
 }
 
-void *rust_helper_pwmchip_get_drvdata(struct pwm_chip *chip)
+__rust_helper void *rust_helper_pwmchip_get_drvdata(struct pwm_chip *chip)
 {
 	return pwmchip_get_drvdata(chip);
 }
 
-void rust_helper_pwmchip_set_drvdata(struct pwm_chip *chip, void *data)
+__rust_helper void rust_helper_pwmchip_set_drvdata(struct pwm_chip *chip, void *data)
 {
 	pwmchip_set_drvdata(chip, data);
 }