From 29fee65616737a632d33c97a74f937949034ac5c Mon Sep 17 00:00:00 2001
From: huntc <huntchr@gmail.com>
Date: Fri, 10 Dec 2021 14:18:22 +1100
Subject: [PATCH] std also required an implementation

---
 embassy/src/io/std.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/embassy/src/io/std.rs b/embassy/src/io/std.rs
index ddec8d56d..580d52891 100644
--- a/embassy/src/io/std.rs
+++ b/embassy/src/io/std.rs
@@ -32,4 +32,10 @@ impl<T: std_io::AsyncWrite> AsyncWrite for FromStdIo<T> {
             .poll_write(cx, buf)
             .map_err(|e| e.into())
     }
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>> {
+        let Self(inner) = unsafe { self.get_unchecked_mut() };
+        unsafe { Pin::new_unchecked(inner) }
+            .poll_flush(cx)
+            .map_err(|e| e.into())
+    }
 }