From 6cd82c63cde438fc0773744ca12cd2bb9208c05c Mon Sep 17 00:00:00 2001
From: 4lDO2 <4lDO2@protonmail.com>
Date: Mon, 10 Feb 2020 15:32:07 +0100
Subject: [PATCH] Enhance the Mmio API, and deprecate Mmio::new().

---
 src/io/mmio.rs | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/io/mmio.rs b/src/io/mmio.rs
index f212636..42251ad 100644
--- a/src/io/mmio.rs
+++ b/src/io/mmio.rs
@@ -11,9 +11,23 @@ pub struct Mmio<T> {
 
 impl<T> Mmio<T> {
     /// Create a new Mmio without initializing
+    #[deprecated = "unsound because it's possible to read even though it's uninitialized"]
     pub fn new() -> Self {
-        Mmio {
-            value: MaybeUninit::uninit()
+        unsafe { Self::uninit() }
+    }
+    pub unsafe fn zeroed() -> Self {
+        Self {
+            value: MaybeUninit::zeroed(),
+        }
+    }
+    pub unsafe fn uninit() -> Self {
+        Self {
+            value: MaybeUninit::uninit(),
+        }
+    }
+    pub const fn from(value: T) -> Self {
+        Self {
+            value: MaybeUninit::new(value),
         }
     }
 }