Fix try_from! macro not checking MSb of type (#140)

* Fix try_from! macro not checking MSb of type

* Use hex values for raw TRB data in test

Author: Demindiro

src/ring/trb/event.rs

@@ -351,3 +351,24 @@ pub enum CompletionCode {
     /// Asserted if an error is detected on a USB2 protocol endpoint for a split transaction.
     SplitTransactionError = 36,
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn try_from_macro() {
+        let raw = [
+            0x00c8_8800, // address low
+            0x0000_0000, // address high
+            0x01_000000, // completion code 1, transfer length 0
+            0x0000_8401, // endpoint id 0, slot id 0, type 33, event data 0, cycle bit 1
+        ];
+        assert_eq!(
+            Allowed::try_from(raw),
+            Ok(Allowed::CommandCompletion(
+                CommandCompletion::try_from(raw).unwrap()
+            )),
+        );
+    }
+}

src/ring/trb/mod.rs

@@ -29,7 +29,7 @@ macro_rules! reserved{
 }
 macro_rules! try_from {
     ($raw:ident => $($name:ident $(($t:ident))?),* $(,)?) => {{
-        if let Some(ty) = Type::from_u32($raw[3].get_bits(10..15)) {
+        if let Some(ty) = Type::from_u32($raw[3].get_bits(10..=15)) {
             paste::paste! {
                 match ty {
                     $(