diff --git a/drivers/gpu/drm/i915/intel_guc_ct.c b/drivers/gpu/drm/i915/intel_guc_ct.c
index 14f55de342e7..2d805a2fd1f0 100644
--- a/drivers/gpu/drm/i915/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/intel_guc_ct.c
@@ -351,16 +351,25 @@ static int ctb_write(struct intel_guc_ct_buffer *ctb,
 	return 0;
 }
 
-/* Wait for the response from the GuC.
+/**
+ * wait_for_ctb_desc_update - Wait for the CT buffer descriptor update.
+ * @desc:	buffer descriptor
  * @fence:	response fence
  * @status:	placeholder for status
- * return:	0 response received (status is valid)
- *		-ETIMEDOUT no response within hardcoded timeout
- *		-EPROTO no response, ct buffer was in error
+ *
+ * Guc will update CT buffer descriptor with new fence and status
+ * after processing the command identified by the fence. Wait for
+ * specified fence and then read from the descriptor status of the
+ * command.
+ *
+ * Return:
+ * *	0 response received (status is valid)
+ * *	-ETIMEDOUT no response within hardcoded timeout
+ * *	-EPROTO no response, CT buffer is in error
  */
-static int wait_for_response(struct guc_ct_buffer_desc *desc,
-			     u32 fence,
-			     u32 *status)
+static int wait_for_ctb_desc_update(struct guc_ct_buffer_desc *desc,
+				    u32 fence,
+				    u32 *status)
 {
 	int err;
 
@@ -414,7 +423,7 @@ static int ctch_send(struct intel_guc *guc,
 
 	intel_guc_notify(guc);
 
-	err = wait_for_response(desc, fence, status);
+	err = wait_for_ctb_desc_update(desc, fence, status);
 	if (unlikely(err))
 		return err;
 	if (!INTEL_GUC_MSG_IS_RESPONSE_SUCCESS(*status))