diff --git a/spa/include/spa/support/loop.h b/spa/include/spa/support/loop.h
index 7dc55f3ae..6c68e0785 100644
--- a/spa/include/spa/support/loop.h
+++ b/spa/include/spa/support/loop.h
@@ -109,8 +109,11 @@ struct spa_loop_methods {
 	 *             an object that has identity.
 	 * \param size The size of data to copy.
 	 * \param block If \true, do not return until func has been called. Otherwise,
-	 *              returns immediately. Passing \true does not risk a deadlock because
-	 *              the data thread is never allowed to wait on any other thread.
+	 *              returns immediately. Passing \true can cause a deadlock when
+	 *              the calling thread is holding the loop context lock. A blocking
+	 *              invoke should never be done from a realtime thread. Also beware
+	 *              of blocking invokes between 2 threads as you can easily end up
+	 *              in a deadly embrace.
 	 * \param user_data An opaque pointer passed to func.
 	 * \return `-EPIPE` if the internal ring buffer filled up,
 	 *         if block is \false, 0 if seq was SPA_ID_INVALID or
diff --git a/spa/plugins/support/loop.c b/spa/plugins/support/loop.c
index 2d2ca8656..5688bebe7 100644
--- a/spa/plugins/support/loop.c
+++ b/spa/plugins/support/loop.c
@@ -365,14 +365,10 @@ retry:
 		if (block && queue->ack_fd != -1) {
 			uint64_t count = 1;
 
-			spa_loop_control_hook_before(&impl->hooks_list);
-
 			if ((res = spa_system_eventfd_read(impl->system, queue->ack_fd, &count)) < 0)
 				spa_log_warn(impl->log, "%p: failed to read event fd:%d: %s",
 						queue, queue->ack_fd, spa_strerror(res));
 
-			spa_loop_control_hook_after(&impl->hooks_list);
-
 			res = item->res;
 		}
 		else {