remove some compiler warnings

Author: stlankes

src/arch/x86/kernel/syscall.rs

@@ -7,8 +7,7 @@ use core::arch::naked_asm;
 /// which implements the system call.
 #[unsafe(naked)]
 pub(crate) extern "C" fn syscall_handler() {
-	unsafe {
-		naked_asm!(
+	naked_asm!(
 		// save context, see x86_64 ABI
 		"push rcx",
 		"push rdx",
@@ -43,5 +42,4 @@ pub(crate) extern "C" fn syscall_handler() {
 		"pop rcx",
 		"sysretq",
 		sys_handler = sym SYSHANDLER_TABLE);
-	}
 }

src/lib.rs

@@ -1,7 +1,5 @@
-#![feature(const_mut_refs)]
 #![feature(linked_list_cursors)]
 #![feature(alloc_error_handler)]
-#![feature(naked_functions)]
 #![feature(abi_x86_interrupt)]
 #![feature(specialization)]
 #![allow(clippy::module_inception)]

src/mm/linked_list.rs

@@ -39,15 +39,15 @@ impl LinkedList {
 	}
 
 	/// Return an iterator over the items in the list
-	pub fn iter(&self) -> Iter {
+	pub fn iter(&self) -> Iter<'_> {
 		Iter {
 			curr: self.head,
 			list: PhantomData,
 		}
 	}
 
 	/// Return an mutable iterator over the items in the list
-	pub fn iter_mut(&mut self) -> IterMut {
+	pub fn iter_mut(&mut self) -> IterMut<'_> {
 		IterMut {
 			prev: &mut self.head as *mut *mut usize as *mut usize,
 			curr: self.head,

src/synch/mutex.rs

@@ -97,7 +97,7 @@ impl<T: ?Sized> Mutex<T> {
 		}
 	}
 
-	pub fn lock(&self) -> MutexGuard<T> {
+	pub fn lock(&self) -> MutexGuard<'_, T> {
 		self.obtain_lock();
 		MutexGuard {
 			value: &self.value,