diff --git a/kernel/Cargo.lock b/kernel/Cargo.lock
index 17bd9a81..9f00d490 100644
--- a/kernel/Cargo.lock
+++ b/kernel/Cargo.lock
@@ -1462,8 +1462,7 @@ checksum = "7fcf8323ef1faaee30a44a340193b1ac6814fd9b7b4e88e9d4519a3e4abe1cfd"
 [[package]]
 name = "smoltcp"
 version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a1a996951e50b5971a2c8c0fa05a381480d70a933064245c4a223ddc87ccc97"
+source = "git+https://git.mirrors.dragonos.org.cn/DragonOS-Community/smoltcp.git?rev=3e61c909fd540d05575068d16dc4574e196499ed#3e61c909fd540d05575068d16dc4574e196499ed"
 dependencies = [
  "bitflags 1.3.2",
  "byteorder 1.5.0",
diff --git a/kernel/src/driver/base/kobject.rs b/kernel/src/driver/base/kobject.rs
index ee157ab7..0b8cec57 100644
--- a/kernel/src/driver/base/kobject.rs
+++ b/kernel/src/driver/base/kobject.rs
@@ -259,102 +259,6 @@ impl KObjectManager {
         }
         kobj.set_parent(None);
     }
-
-    fn get_kobj_path_length(kobj: &Arc<dyn KObject>) -> usize {
-        log::info!("get_kobj_path_length() kobj:{:?}", kobj.name());
-        let mut parent = kobj.parent().unwrap().upgrade().unwrap();
-        /* walk up the ancestors until we hit the one pointing to the
-         * root.
-         * Add 1 to strlen for leading '/' of each level.
-         */
-        let mut length = 0; // 确保 length 被正确初始化
-        let mut iteration_count = 0; // 用于记录迭代次数
-        const MAX_ITERATIONS: usize = 10; // 最大迭代次数
-
-        loop {
-            log::info!(
-                "Iteration {}: parent.name():{:?}",
-                iteration_count,
-                parent.name()
-            );
-            length += parent.name().len() + 1;
-            if let Some(weak_parent) = parent.parent() {
-                if let Some(upgraded_parent) = weak_parent.upgrade() {
-                    parent = upgraded_parent;
-                } else {
-                    log::error!("Failed to upgrade weak reference to parent");
-                    break;
-                }
-            } else {
-                log::error!("Parent has no parent");
-                break;
-            }
-
-            iteration_count += 1;
-            if iteration_count >= MAX_ITERATIONS {
-                log::error!("Reached maximum iteration count, breaking to avoid infinite loop");
-                break;
-            }
-        }
-        return length;
-    }
-
-    /*
-        static void fill_kobj_path(struct kobject *kobj, char *path, int length)
-    {
-        struct kobject *parent;
-
-        --length;
-        for (parent = kobj; parent; parent = parent->parent) {
-            int cur = strlen(kobject_name(parent));
-            /* back up enough to print this name with '/' */
-            length -= cur;
-            memcpy(path + length, kobject_name(parent), cur);
-            *(path + --length) = '/';
-        }
-
-        pr_debug("kobject: '%s' (%p): %s: path = '%s'\n", kobject_name(kobj),
-             kobj, __func__, path);
-    }
-         */
-    fn fill_kobj_path(kobj: &Arc<dyn KObject>, path: &mut [u8], length: usize) {
-        let mut parent = kobj.parent().unwrap().upgrade().unwrap();
-        let mut length = length;
-        length -= 1;
-        loop {
-            log::info!("fill_kobj_path parent.name():{:?}", parent.name());
-            let cur = parent.name().len();
-            if length < cur + 1 {
-                // 如果剩余长度不足以容纳当前名称和分隔符，则退出
-                break;
-            }
-            length -= cur;
-            let parent_name = parent.name();
-            let name = parent_name.as_bytes();
-            path[length..(cur + length)].copy_from_slice(&name[..cur]);
-            length -= 1;
-            path[length] = b'/';
-            if let Some(weak_parent) = parent.parent() {
-                if let Some(upgraded_parent) = weak_parent.upgrade() {
-                    parent = upgraded_parent;
-                } else {
-                    break;
-                }
-            } else {
-                break;
-            }
-        }
-    }
-    // TODO: 实现kobject_get_path
-    // https://code.dragonos.org.cn/xref/linux-6.1.9/lib/kobject.c#139
-    pub fn kobject_get_path(kobj: &Arc<dyn KObject>) -> String {
-        log::debug!("kobject_get_path() kobj:{:?}", kobj.name());
-        let length = Self::get_kobj_path_length(kobj);
-        let path: &mut [u8] = &mut vec![0; length];
-        Self::fill_kobj_path(kobj, path, length);
-        let path_string = String::from_utf8(path.to_vec()).unwrap();
-        return path_string;
-    }
 }
 
 /// 动态创建的kobject对象的ktype
diff --git a/kernel/src/time/timer.rs b/kernel/src/time/timer.rs
index 8276db2e..35a3a13b 100644
--- a/kernel/src/time/timer.rs
+++ b/kernel/src/time/timer.rs
@@ -284,6 +284,7 @@ pub fn timer_init() {
 }
 
 /// 计算接下来n毫秒对应的定时器时间片
+#[allow(dead_code)]
 pub fn next_n_ms_timer_jiffies(expire_ms: u64) -> u64 {
     return TIMER_JIFFIES.load(Ordering::SeqCst) + expire_ms * 1000000 / NSEC_PER_JIFFY as u64;
 }