diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c
index 8c2faa964511..ccac88da8864 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c
@@ -45,7 +45,7 @@ static const struct cvb_coef gk20a_cvb_coef[] = {
 	/* 852 */ { 1608418, -21643, -269,     0,    763,  -48},
 };
 
-/**
+/*
  * cvb_mv = ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0)
  */
 static inline int
@@ -58,7 +58,7 @@ gk20a_volt_get_cvb_voltage(int speedo, int s_scale, const struct cvb_coef *coef)
 	return mv;
 }
 
-/**
+/*
  * cvb_t_mv =
  * ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0) +
  * ((c3 * speedo / s_scale + c4 + c5 * T / t_scale) * T / t_scale)