build: Remove unneeded mut as suggested by clippy

Signed-off-by: Akira Moroo <[email protected]>

src/block.rs

@@ -262,14 +262,14 @@ impl<'a> VirtioBlockDevice<'a> {
         let mut state = self.state.borrow_mut();
 
         let next_head = state.next_head;
-        let mut d = &mut state.descriptors[next_head];
+        let d = &mut state.descriptors[next_head];
         let next_desc = (next_head + 1) % QUEUE_SIZE;
         d.addr = (&header as *const _) as u64;
         d.length = core::mem::size_of::<BlockRequestHeader>() as u32;
         d.flags = VIRTQ_DESC_F_NEXT;
         d.next = next_desc as u16;
 
-        let mut d = &mut state.descriptors[next_desc];
+        let d = &mut state.descriptors[next_desc];
         let next_desc = (next_desc + 1) % QUEUE_SIZE;
         if request != RequestType::Flush {
             match data {
@@ -294,7 +294,7 @@ impl<'a> VirtioBlockDevice<'a> {
             };
         d.next = next_desc as u16;
 
-        let mut d = &mut state.descriptors[next_desc];
+        let d = &mut state.descriptors[next_desc];
         d.addr = (&footer as *const _) as u64;
         d.length = core::mem::size_of::<BlockRequestFooter>() as u32;
         d.flags = VIRTQ_DESC_F_WRITE;

src/efi/alloc.rs

@@ -55,7 +55,7 @@ impl Allocator {
         self.key += 1;
 
         if self.first_allocation.is_none() {
-            let mut a = &mut self.allocations[0];
+            let a = &mut self.allocations[0];
 
             a.in_use = true;
             a.next_allocation = None;

src/efi/mod.rs

@@ -212,8 +212,8 @@ fn convert_internal_pointer(descriptors: &[alloc::MemoryDescriptor], ptr: u64) -
 }
 
 unsafe fn fixup_at_virtual(descriptors: &[alloc::MemoryDescriptor]) {
-    let mut st = &mut ST;
-    let mut rs = &mut RS;
+    let st = &mut ST;
+    let rs = &mut RS;
 
     let ptr = convert_internal_pointer(descriptors, (not_available as *const ()) as u64).unwrap();
     rs.get_time = transmute(ptr);
@@ -1174,7 +1174,7 @@ pub fn efi_exec(
 
     let mut stdin = console::STDIN;
     let mut stdout = console::STDOUT;
-    let mut st = unsafe { &mut ST };
+    let st = unsafe { &mut ST };
     st.con_in = &mut stdin;
     st.con_out = &mut stdout;
     st.std_err = &mut stdout;