Fixup iface common, require default bound

Author: SpinFast

src/generate/iface/common.rs

@@ -53,21 +53,23 @@ impl<'a, I, K: Copy, V, A: Access> Reg<'a, I, K, V, A> {
     }
 }
 
-impl<'a, I: Interface<K, V>, K: Copy, V: Copy, A: Read> Reg<'a, I, K, V, A> {
+impl<'a, I: Interface<K, V>, K: Copy, V, A: Read> Reg<'a, I, K, V, A> {
     #[inline(always)]
     pub fn read(&mut self) -> Result<V, I::Error> {
         self.iface.read(self.addr)
     }
 }
 
-impl<'a, I: Interface<K, V>, K: Copy, V: Copy, A: Write> Reg<'a, I, K, V, A> {
+impl<'a, I: Interface<K, V>, K: Copy, V, A: Write> Reg<'a, I, K, V, A> {
     #[inline(always)]
     pub fn write_value(&mut self, val: V) -> Result<(), I::Error> {
         self.iface.write(self.addr, val)
     }
 }
 
-impl<'a, I: Interface<K, V>, K: Copy, V: Default + Copy, A: Write> Reg<'a, I, K, V, A> {
+impl<'a, I: Interface<K, V>, K: Copy, V: Copy + core::default::Default, A: Write>
+    Reg<'a, I, K, V, A>
+{
     #[inline(always)]
     pub fn write<R>(&mut self, f: impl FnOnce(&mut V) -> R) -> Result<R, I::Error> {
         let mut val = Default::default();
@@ -77,7 +79,7 @@ impl<'a, I: Interface<K, V>, K: Copy, V: Default + Copy, A: Write> Reg<'a, I, K,
     }
 }
 
-impl<'a, I: Interface<K, V>, K: Copy, V: Copy, A: Read + Write> Reg<'a, I, K, V, A> {
+impl<'a, I: Interface<K, V>, K: Copy, V, A: Read + Write> Reg<'a, I, K, V, A> {
     #[inline(always)]
     pub fn modify<R>(&mut self, f: impl FnOnce(&mut V) -> R) -> Result<R, I::Error> {
         let mut val = self.read()?;