fix: apply clippy suggestions

src/bus.rs

@@ -73,17 +73,15 @@ impl Bus {
         self.timer.step(cycles);
         self.sound.step(cycles);
     }
+
     pub(crate) fn step_dma(&mut self, pending: Cycle) {
         let pending_cycles: u32 = pending.into();
 
         for _ in 0..pending_cycles {
-            match self.ppu.dma.clock() {
-                Some((src_addr, dest_addr)) => {
+            if let Some((src_addr, dest_addr)) = self.ppu.dma.clock() {
                 let byte = self.read_byte(src_addr);
                 self.write_byte(dest_addr, byte);
             }
-                None => {}
-            }
         }
     }
 

src/cartridge.rs

@@ -29,9 +29,9 @@ impl Cartridge {
     }
 
     fn detect_mbc(memory: &[u8]) -> Box<dyn MemoryBankController> {
-        let ram_size = Self::find_ram_size(&memory);
-        let bank_count = Self::find_bank_count(&memory);
-        let mbc_kind = Self::find_mbc(&memory);
+        let ram_size = Self::find_ram_size(memory);
+        let bank_count = Self::find_bank_count(memory);
+        let mbc_kind = Self::find_mbc(memory);
         let ram_byte_count = ram_size.as_byte_count();
 
         match mbc_kind {

src/gui.rs

@@ -182,8 +182,7 @@ impl Egui {
                     ui.monospace(format!("{:#04X}", game_boy.register(Register::A)));
 
                     ui.label("F");
-                    let flag: u8 = game_boy.register(Register::Flag).into();
-                    ui.monospace(format!("{:#04X}", flag));
+                    ui.monospace(format!("{:#04X}", game_boy.register(Register::Flag)));
                 });
 
                 ui.horizontal(|ui| {

src/main.rs

@@ -67,7 +67,7 @@ fn main() -> Result<()> {
         .expect("Failed to load ROM");
 
     let default_title = "DMG-01 Emulator";
-    let cartridge_title = game_boy.rom_title().unwrap_or(&default_title);
+    let cartridge_title = game_boy.rom_title().unwrap_or(default_title);
 
     // Initialize Gamepad Support
     let mut gilrs = Gilrs::new().expect("Failed to initialize Gilrs");
@@ -205,7 +205,7 @@ fn create_window(event_loop: &EventLoop<()>, title: &str) -> Result<Window> {
         .with_title(title)
         .with_inner_size(size)
         .with_min_inner_size(size)
-        .build(&event_loop)?)
+        .build(event_loop)?)
 }
 
 fn handle_gamepad_input(game_boy: &mut LR35902, event: GamepadEvent) {

src/ppu/dma.rs

@@ -89,7 +89,7 @@ impl Default for DmaControl {
 
 impl DmaControl {
     pub(crate) fn update(&mut self, byte: u8, state: &mut DmaState) {
-        let left = (byte as u16) << 8 | 0x0000;
+        let left = (byte as u16) << 8;
         let right = (byte as u16) << 8 | 0x009F;
 
         self.repr = byte;