From 7fd91300246ce1038beb9106b51bed2eebfc00c3 Mon Sep 17 00:00:00 2001
From: Jiajie Chen <noc@jiegec.ac.cn>
Date: Tue, 19 Mar 2019 18:35:40 +0800
Subject: [PATCH] Add missing changeset in last commit

---
 kernel/src/syscall/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/src/syscall/mod.rs b/kernel/src/syscall/mod.rs
index f324f31..10158ac 100644
--- a/kernel/src/syscall/mod.rs
+++ b/kernel/src/syscall/mod.rs
@@ -394,7 +394,7 @@ impl From<VMError> for SysError {
 
 const SPIN_WAIT_TIMES: usize = 100;
 
-pub fn spin_and_wait(condvars: &[&Condvar], mut action: impl FnMut() -> Option<SysResult>) -> SysResult {
+pub fn spin_and_wait<T>(condvars: &[&Condvar], mut action: impl FnMut() -> Option<T>) -> T {
     for i in 0..SPIN_WAIT_TIMES {
         if let Some(result) = action() {
             return result;