Remove loop

src/lib.rs

@@ -4,7 +4,6 @@ mod serial_config;
 
 use numtoa::NumToA;
 
-use core::convert::Infallible;
 use core::future::Future;
 
 use embassy_rp::bind_interrupts;
@@ -37,7 +36,7 @@ impl Serial<'static> {
     pub fn new(
         usb: USB,
         serial_config: SerialConfig<'static>,
-    ) -> (Serial<'static>, impl Future<Output = Infallible>) {
+    ) -> (Serial<'static>, impl Future<Output = ()>) {
         // Create the driver, from the HAL.
         let driver = Driver::new(usb, Irqs);
 
@@ -84,12 +83,10 @@ impl Serial<'static> {
         (Self { class }, Self::run_usb())
     }
 
-    fn run_usb() -> impl Future<Output = Infallible> {
-        unsafe {
-            async {
-                loop {
-                    USB.as_mut().unwrap().run().await;
-                }
+    fn run_usb() -> impl Future<Output = ()> {
+        async {
+            unsafe {
+                USB.as_mut().unwrap().run().await;
             }
         }
     }