diff --git a/drivers/ddk/core.S b/drivers/ddk/core.S
index 373c7e01b1..039fb6acac 100644
--- a/drivers/ddk/core.S
+++ b/drivers/ddk/core.S
@@ -10,6 +10,7 @@
 
     .global _AttachIntHandler
 
+    .global _CancelTimerHS
     .global _CreateEvent
     .global _CreateObject
     .global _CreateRingBuffer
@@ -64,7 +65,7 @@
     .global _SetScreen
     .global _SysMsgBoardStr
 
-    .global _TimerHs
+    .global _TimerHS
 
     .global _UserAlloc
     .global _UserFree
@@ -79,6 +80,7 @@
 
     .def  _AttachIntHandler;  .scl  2;  .type 32; .endef
 
+    .def  _CancelTimerHS;     .scl  2;  .type 32; .endef
     .def  _CreateEvent;       .scl  2;  .type 32; .endef
     .def  _CreateObject;      .scl  2;  .type 32; .endef
     .def  _CreateRingBuffer;  .scl  2;  .type 32; .endef
@@ -133,7 +135,7 @@
     .def  _SetKeyboardData;   .scl  2;  .type 32; .endef
     .def  _SysMsgBoardStr;    .scl  2;  .type 32; .endef
 
-    .def  _TimerHs;           .scl  2;  .type 32; .endef
+    .def  _TimerHS;           .scl  2;  .type 32; .endef
 
     .def  _UserAlloc;         .scl  2;  .type 32; .endef
     .def  _UserFree;          .scl  2;  .type 32; .endef
@@ -148,6 +150,7 @@ _AllocPages:
 
 _AttachIntHandler:
 
+_CancelTimerHS:
 _CreateEvent:
 _CreateObject:
 _CreateRingBuffer:
@@ -202,7 +205,7 @@ _SetKeyboardData:
 _SetScreen:
 _SysMsgBoardStr:
 
-_TimerHs:
+_TimerHS:
 
 _UserAlloc:
 _UserFree:
@@ -220,16 +223,15 @@ _WaitEventTimeout:
 
         .ascii " -export:AttachIntHandler"     # stdcall
 
+        .ascii " -export:CancelTimerHS"        # stfcall
         .ascii " -export:CreateEvent"          #
         .ascii " -export:CreateObject"         #
         .ascii " -export:CreateRingBuffer"     # stdcall
         .ascii " -export:CreateThread"         #
 
         .ascii " -export:Delay"                # stdcall
-
         .ascii " -export:DestroyEvent"
         .ascii " -export:DestroyObject"
-
         .ascii " -export:DiskAdd"              # stdcall
         .ascii " -export:DiskMediaChanged"     # stdcall
 
@@ -237,7 +239,6 @@ _WaitEventTimeout:
         .ascii " -export:FreePage"             #
 
         .ascii " -export:GetCpuFreq"           #
-
         .ascii " -export:GetDisplay"           # stdcall
         .ascii " -export:GetEvent"             #
         .ascii " -export:GetPid"               #
@@ -276,7 +277,7 @@ _WaitEventTimeout:
         .ascii " -export:SetScreen"            # stdcall
         .ascii " -export:SysMsgBoardStr"       # stdcall
 
-        .ascii " -export:TimerHs"              # stdcall
+        .ascii " -export:TimerHS"              # stdcall
 
         .ascii " -export:UserAlloc"            # stdcall
         .ascii " -export:UserFree"             # stdcall
diff --git a/drivers/ddk/linux/workqueue.c b/drivers/ddk/linux/workqueue.c
index c2e46bd4fd..98a8ffa63d 100644
--- a/drivers/ddk/linux/workqueue.c
+++ b/drivers/ddk/linux/workqueue.c
@@ -94,7 +94,7 @@ int queue_delayed_work(struct workqueue_struct *wq,
 //    dbgprintf("%s %p queue: %p\n", __FUNCTION__, &dwork->work, wq);
 
     work->data = wq;
-    TimerHs(delay,0, delayed_work_timer_fn, dwork);
+    TimerHS(delay,0, delayed_work_timer_fn, dwork);
     return 1;
 }
 
@@ -104,3 +104,20 @@ bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay)
     return queue_delayed_work(system_wq, dwork, delay);
 }
 
+int mod_timer(struct timer_list *timer, unsigned long expires)
+{
+    int ret = 0;
+    expires - GetTimerTicks();
+
+    if(timer->handle)
+    {
+        CancelTimerHS(timer->handle);
+        timer->handle = 0;
+        ret = 1;
+    };
+
+    timer->handle = TimerHS(expires, 0, timer->function, timer->data);
+
+    return ret;
+}
+
diff --git a/drivers/include/linux/kernel.h b/drivers/include/linux/kernel.h
index 308e1202ec..897150b24d 100644
--- a/drivers/include/linux/kernel.h
+++ b/drivers/include/linux/kernel.h
@@ -273,10 +273,17 @@ struct timer_list {
 
          void (*function)(unsigned long);
          unsigned long data;
-
-//         struct tvec_base *base;
+         u32  handle;
 };
 
+#define setup_timer(_timer, _fn, _data)                                 \
+        do {                                                            \
+                (_timer)->function = (_fn);                             \
+                (_timer)->data = (_data);                               \
+                (_timer)->handle = 0;                                   \
+        } while (0)
+
+
 struct timespec {
     long tv_sec;                 /* seconds */
     long tv_nsec;                /* nanoseconds */
diff --git a/drivers/include/linux/workqueue.h b/drivers/include/linux/workqueue.h
index 3c578eade4..70c9dbc4cc 100644
--- a/drivers/include/linux/workqueue.h
+++ b/drivers/include/linux/workqueue.h
@@ -61,6 +61,7 @@ struct workqueue_struct *alloc_workqueue_key(const char *fmt,
 #define alloc_ordered_workqueue(fmt, flags, args...)            \
         alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args)
 
+bool queue_work(struct workqueue_struct *wq, struct work_struct *work);
 int queue_delayed_work(struct workqueue_struct *wq,
                         struct delayed_work *dwork, unsigned long delay);
 
@@ -80,6 +81,10 @@ bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay);
         (_work)->work.func = _func;             \
     } while (0)
 
+static inline bool schedule_work(struct work_struct *work)
+{
+    return queue_work(system_wq, work);
+}
 
 
 #endif  /*  _LINUX_WORKQUEUE_H  */
diff --git a/drivers/include/syscall.h b/drivers/include/syscall.h
index 89897972dc..6d0535d083 100644
--- a/drivers/include/syscall.h
+++ b/drivers/include/syscall.h
@@ -55,8 +55,10 @@ void  FASTCALL MutexUnlock(struct mutex*)__asm__("MutexUnlock");
 addr_t IMPORT  GetStackBase(void)__asm__("GetStackBase");
 u32_t  IMPORT  GetPid(void)__asm__("GetPid");
 
-u32 STDCALL TimerHs(u32 delay, u32 interval,
-                    void *fn, void *data)asm("TimerHs");
+u32 STDCALL TimerHS(u32 delay, u32 interval,
+                    void *fn, void *data)asm("TimerHS");
+
+void STDCALL CancelTimerHS(u32 handle)asm("CancelTimerHS");
 
 u64 IMPORT GetCpuFreq()__asm__("GetCpuFreq");