Document the thread safety of the primitive key slot functions
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
diff --git a/library/psa_crypto_slot_management.h b/library/psa_crypto_slot_management.h
index 01778f8..fc46257 100644
--- a/library/psa_crypto_slot_management.h
+++ b/library/psa_crypto_slot_management.h
@@ -134,6 +134,9 @@
* new state. If the state of the slot was not expected_state, the state is
* unchanged.
*
+ * If multi-threading is enabled, the caller must hold the
+ * global key slot mutex.
+ *
* \param[in] slot The key slot.
* \param[in] expected_state The current state of the slot.
* \param[in] new_state The new state of the slot.
@@ -157,7 +160,8 @@
/** Register as a reader of a key slot.
*
* This function increments the key slot registered reader counter by one.
- *
+ * If multi-threading is enabled, the caller must hold the
+ * global key slot mutex.
* \param[in] slot The key slot.
*
* \retval #PSA_SUCCESS
@@ -182,7 +186,9 @@
* This function decrements the key slot registered reader counter by one.
* If the state of the slot is PSA_SLOT_PENDING_DELETION,
* and there is only one registered reader (the caller),
- * this function will call psa_wipe_key_slot().
+ * this function will call psa_wipe_slot().
+ * If multi-threading is enabled, the caller must hold the
+ * global key slot mutex.
*
* \note To ease the handling of errors in retrieving a key slot
* a NULL input pointer is valid, and the function returns