rust: kernel: init: Support type paths in try_init!() and try_pin_init!()

This makes directly initializing structures with a type name that isn't
in the current scope work properly.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Signed-off-by: Janne Grunau <j@jannau.net>

Author: hoshinolina

rust/kernel/init.rs

@@ -228,17 +228,17 @@ pub trait InPlaceInit<T>: Sized {
 /// [`Error`]: crate::error::Error
 #[macro_export]
 macro_rules! try_init {
-    ($(&$this:ident in)? $t:ident $(::<$($generics:ty),* $(,)?>)? {
+    ($(&$this:ident in)? $t:ident $(::$p:ident)* $(::<$($generics:ty),* $(,)?>)? {
         $($fields:tt)*
     }) => {
-        ::pin_init::try_init!($(&$this in)? $t $(::<$($generics),*>)? {
+        ::pin_init::try_init!($(&$this in)? $t $(::$p)* $(::<$($generics),*>)? {
             $($fields)*
         }? $crate::error::Error)
     };
-    ($(&$this:ident in)? $t:ident $(::<$($generics:ty),* $(,)?>)? {
+    ($(&$this:ident in)? $t:ident $(::$p:ident)* $(::<$($generics:ty),* $(,)?>)? {
         $($fields:tt)*
     }? $err:ty) => {
-        ::pin_init::try_init!($(&$this in)? $t $(::<$($generics),*>)? {
+        ::pin_init::try_init!($(&$this in)? $t $(::$p)* $(::<$($generics),*>)? {
             $($fields)*
         }? $err)
     };
@@ -288,17 +288,17 @@ macro_rules! try_init {
 /// [`Error`]: crate::error::Error
 #[macro_export]
 macro_rules! try_pin_init {
-    ($(&$this:ident in)? $t:ident $(::<$($generics:ty),* $(,)?>)? {
+    ($(&$this:ident in)? $t:ident $(::$p:ident)* $(::<$($generics:ty),* $(,)?>)? {
         $($fields:tt)*
     }) => {
-        ::pin_init::try_pin_init!($(&$this in)? $t $(::<$($generics),*>)? {
+        ::pin_init::try_pin_init!($(&$this in)? $t $(::$p)* $(::<$($generics),*>)? {
             $($fields)*
         }? $crate::error::Error)
     };
-    ($(&$this:ident in)? $t:ident $(::<$($generics:ty),* $(,)?>)? {
+    ($(&$this:ident in)? $t:ident $(::$p:ident)* $(::<$($generics:ty),* $(,)?>)? {
         $($fields:tt)*
     }? $err:ty) => {
-        ::pin_init::try_pin_init!($(&$this in)? $t $(::<$($generics),*>)? {
+        ::pin_init::try_pin_init!($(&$this in)? $t $(::$p)* $(::<$($generics),*>)? {
             $($fields)*
         }? $err)
     };