clean up software timer code.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@222 bbd45198-f89e-11dd-88c7-29a3b14d5316

1 files changed, 4 insertions, 0 deletions

diff --git a/src/ipc.c b/src/ipc.c
index b073e9f0f1..c005221d87 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -107,6 +107,10 @@ rt_inline rt_err_t rt_ipc_object_suspend(struct rt_ipc_object *ipc, struct rt_th
 					break;
 				}
 			}
+
+			/* not found a suitable position, append to the end of suspend_thread list */
+			if (n == &(ipc->suspend_thread))
+				rt_list_insert_before(&(ipc->suspend_thread), &(thread->tlist));
 		}
 		break;
 	}