Get rid of some warnings

embassy-stm32f4/src/exti.rs

@@ -19,7 +19,7 @@ pub struct ExtiManager {
 
 impl<'a> ExtiManager {
     pub fn new(_exti: EXTI, syscfg: SysCfg) -> Self {
-        Self { syscfg: syscfg }
+        Self { syscfg }
     }
 
     pub fn new_pin<T, I>(&'static mut self, mut pin: T, interrupt: I) -> ExtiPin<T, I>
@@ -30,8 +30,8 @@ impl<'a> ExtiManager {
         pin.make_interrupt_source(&mut self.syscfg);
 
         ExtiPin {
-            pin: pin,
-            interrupt: interrupt,
+            pin,
+            interrupt,
             _mgr: self,
         }
     }

embassy-stm32f4/src/fmt.rs

@@ -1,4 +1,5 @@
 #![macro_use]
+#![allow(clippy::module_inception)]
 
 #[cfg(all(feature = "defmt", feature = "log"))]
 compile_error!("You may not enable both `defmt` and `log` features.");

embassy-stm32f4/src/lib.rs

@@ -2,7 +2,6 @@
 #![feature(generic_associated_types)]
 #![feature(asm)]
 #![feature(type_alias_impl_trait)]
-#![feature(let_chains)]
 
 #[cfg(not(any(
     feature = "stm32f401",

embassy-stm32f4/src/serial.rs

@@ -7,32 +7,21 @@
 use core::future::Future;
 use core::ptr;
 use core::sync::atomic::{self, Ordering};
-use core::task::{Context, Poll};
 
 use embassy::interrupt::OwnedInterrupt;
 use embassy::uart::{Error, Uart};
 use embassy::util::Signal;
-use embedded_dma::StaticWriteBuffer;
 
 use crate::hal::dma::config::DmaConfig;
 use crate::hal::dma::traits::{PeriAddress, Stream};
-use crate::hal::dma::{
-    Channel4, MemoryToPeripheral, PeripheralToMemory, Stream2, Stream7, StreamsTuple, Transfer,
-};
-use crate::hal::gpio::gpioa::{PA10, PA9};
-use crate::hal::gpio::{Alternate, AF7};
-use crate::hal::prelude::*;
+use crate::hal::dma::{Stream2, Stream7, StreamsTuple, Transfer};
 use crate::hal::rcc::Clocks;
-use crate::hal::serial::config::{
-    Config as SerialConfig, DmaConfig as SerialDmaConfig, Parity, StopBits, WordLength,
-};
+use crate::hal::serial::config::{Config as SerialConfig, DmaConfig as SerialDmaConfig};
 use crate::hal::serial::Pins;
 use crate::hal::serial::{Event as SerialEvent, Serial as HalSerial};
-use crate::hal::time::Bps;
 
 use crate::interrupt;
 
-use crate::pac::Interrupt;
 use crate::pac::{DMA2, USART1};
 
 /// Interface to the Serial peripheral