diff --git a/modules/axtask/src/api.rs b/modules/axtask/src/api.rs
index 0597ba8acf..b3278b9595 100644
--- a/modules/axtask/src/api.rs
+++ b/modules/axtask/src/api.rs
@@ -2,7 +2,7 @@
 
 use alloc::{string::String, sync::Arc};
 
-use kernel_guard::{NoOp, NoPreemptIrqSave};
+use kernel_guard::NoPreemptIrqSave;
 
 pub(crate) use crate::run_queue::{current_run_queue, select_run_queue};
 
@@ -92,6 +92,7 @@ pub fn init_scheduler_secondary() {
 #[cfg(feature = "irq")]
 #[doc(cfg(feature = "irq"))]
 pub fn on_timer_tick() {
+    use kernel_guard::NoOp;
     crate::timers::check_events();
     // Since irq and preemption are both disabled here,
     // we can get current run queue with the default `kernel_guard::NoOp`.
diff --git a/modules/axtask/src/task.rs b/modules/axtask/src/task.rs
index 50e256b828..017b764171 100644
--- a/modules/axtask/src/task.rs
+++ b/modules/axtask/src/task.rs
@@ -275,11 +275,6 @@ impl TaskInner {
         matches!(self.state(), TaskState::Ready)
     }
 
-    #[inline]
-    pub(crate) fn is_blocked(&self) -> bool {
-        matches!(self.state(), TaskState::Blocked)
-    }
-
     #[inline]
     pub(crate) const fn is_init(&self) -> bool {
         self.is_init
diff --git a/modules/axtask/src/wait_queue.rs b/modules/axtask/src/wait_queue.rs
index a4fda3785b..d6e546f347 100644
--- a/modules/axtask/src/wait_queue.rs
+++ b/modules/axtask/src/wait_queue.rs
@@ -51,7 +51,7 @@ impl WaitQueue {
 
     /// Cancel events by removing the task from the wait queue.
     /// If `from_timer_list` is true, try to remove the task from the timer list.
-    fn cancel_events(&self, curr: CurrentTask, from_timer_list: bool) {
+    fn cancel_events(&self, curr: CurrentTask, _from_timer_list: bool) {
         // A task can be wake up only one events (timer or `notify()`), remove
         // the event from another queue.
         if curr.in_wait_queue() {
@@ -64,7 +64,7 @@ impl WaitQueue {
         // Try to cancel a timer event from timer lists.
         // Just mark task's current timer ticket ID as expired.
         #[cfg(feature = "irq")]
-        if from_timer_list {
+        if _from_timer_list {
             curr.timer_ticket_expired();
             // Note:
             //  this task is still not removed from timer list of target CPU,