1 files changed, 7 insertions, 0 deletions
diff --git a/os/rt/include/chsem.h b/os/rt/include/chsem.h
index 4762da9df..51f9302a1 100644
--- a/os/rt/include/chsem.h
+++ b/os/rt/include/chsem.h
@@ -112,6 +112,8 @@ extern "C" {
  * @brief   Decreases the semaphore counter.
  * @details This macro can be used when the counter is known to be positive.
  *
+ * @param[in] sp        pointer to a @p semaphore_t structure
+ *
  * @iclass
  */
 static inline void chSemFastWaitI(semaphore_t *sp) {
@@ -126,6 +128,8 @@ static inline void chSemFastWaitI(semaphore_t *sp) {
  * @details This macro can be used when the counter is known to be not
  *          negative.
  *
+ * @param[in] sp        pointer to a @p semaphore_t structure
+ *
  * @iclass
  */
 static inline void chSemFastSignalI(semaphore_t *sp) {
@@ -138,6 +142,9 @@ static inline void chSemFastSignalI(semaphore_t *sp) {
 /**
  * @brief   Returns the semaphore counter current value.
  *
+ * @param[in] sp        pointer to a @p semaphore_t structure
+ * @return              The semaphore counter value.
+ *
  * @iclass
  */
 static inline cnt_t chSemGetCounterI(semaphore_t *sp) {