From fa5f72dd521be504b16d02efc0d211ddd6516ef6 Mon Sep 17 00:00:00 2001
From: Will Greenberg <willg@eff.org>
Date: Thu, 29 Feb 2024 09:53:56 -0800
Subject: [PATCH] lib: ignore WriteZero for flush as well

---
 lib/src/diag_device.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/src/diag_device.rs b/lib/src/diag_device.rs
index 9de601f..d27ef02 100644
--- a/lib/src/diag_device.rs
+++ b/lib/src/diag_device.rs
@@ -133,8 +133,11 @@ impl DiagDevice {
                 return Err(DiagDeviceError::DeviceWriteFailed(err));
             }
         }
-        self.file.flush().await
-            .map_err(DiagDeviceError::DeviceWriteFailed)?;
+        if let Err(err) = self.file.flush().await {
+            if err.kind() != ErrorKind::WriteZero {
+                return Err(DiagDeviceError::DeviceWriteFailed(err));
+            }
+        }
         Ok(())
     }