usb: add -usb-serial crate, fix warnings and stable build.

2 files changed, 4 insertions, 7 deletions

diff --git a/embassy-usb/src/descriptor.rs b/embassy-usb/src/descriptor.rs
index 746c6b828..5f8b0d560 100644
--- a/embassy-usb/src/descriptor.rs
+++ b/embassy-usb/src/descriptor.rs
@@ -136,6 +136,7 @@ impl<'a> DescriptorWriter<'a> {
         )
     }
 
+    #[allow(unused)]
     pub(crate) fn end_class(&mut self) {
         self.num_endpoints_mark = None;
     }
diff --git a/embassy-usb/src/lib.rs b/embassy-usb/src/lib.rs
index cbb909244..5a6b21906 100644
--- a/embassy-usb/src/lib.rs
+++ b/embassy-usb/src/lib.rs
@@ -302,7 +302,6 @@ impl<'d, D: Driver<'d>> UsbDevice<'d, D> {
 
     async fn handle_get_descriptor(&mut self, req: Request) {
         let (dtype, index) = req.descriptor_type_index();
-        let config = self.config.clone();
 
         match dtype {
             descriptor_type::BOS => self.control.accept_in(self.bos_descriptor).await,
@@ -321,13 +320,10 @@ impl<'d, D: Driver<'d>> UsbDevice<'d, D> {
                         2 => self.config.product,
                         3 => self.config.serial_number,
                         _ => {
-                            let index = StringIndex::new(index);
-                            let lang_id = req.index;
+                            let _index = StringIndex::new(index);
+                            let _lang_id = req.index;
+                            // TODO
                             None
-                            //classes
-                            //    .iter()
-                            //    .filter_map(|cls| cls.get_string(index, lang_id))
-                            //    .nth(0)
                         }
                     };