[FIX] deadlock, when rmmod swap_us_manager

diff --git a/us_manager/us_manager.c b/us_manager/us_manager.c
index f8b60d2..80c1b70 100644 (file)
--- a/us_manager/us_manager.c
+++ b/us_manager/us_manager.c
@@ -182,7 +182,7 @@ static int do_usm_start(void)
 
 int usm_stop(void)
 {
-       down(&mutex_inst);
+       mutex_lock(&mutex_inst);
        if (flag_inst == 0)
                goto unlock;
 
@@ -190,7 +190,7 @@ int usm_stop(void)
 
        flag_inst = 0;
 unlock:
-       up(&mutex_inst);
+       mutex_unlock(&mutex_inst);
 
        return 0;
 }
@@ -200,7 +200,7 @@ int usm_start(void)
 {
        int ret;
 
-       down(&mutex_inst);
+       mutex_lock(&mutex_inst);
        if (flag_inst)
                goto unlock;
 
@@ -209,7 +209,7 @@ int usm_start(void)
                flag_inst = 1;
 
 unlock:
-       up(&mutex_inst);
+       mutex_unlock(&mutex_inst);
 
        return ret;
 }
@@ -230,10 +230,10 @@ static int __init init_us_manager(void)
 
 static void __exit exit_us_manager(void)
 {
-       down(&mutex_inst);
+       mutex_lock(&mutex_inst);
        if (flag_inst)
                do_usm_stop();
-       up(&mutex_inst);
+       mutex_unlock(&mutex_inst);
 
        uninit_msg();
        uninit_helper();