From 76e5f120948edfa188de1915e9f6008784a86b51 Mon Sep 17 00:00:00 2001
From: Jef Driesen <jefdriesen@users.sourceforge.net>
Date: Mon, 29 Oct 2007 10:49:35 +0000
Subject: [PATCH] Implemented the win32 serial_drain function using
 FlushFileBuffers.

---
 serial_win32.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/serial_win32.c b/serial_win32.c
index 2a224d5..fa2d6c1 100644
--- a/serial_win32.c
+++ b/serial_win32.c
@@ -105,14 +105,6 @@ serial_open (serial** out, const char* name)
 		return -1;
 	}
 
-	// Set the event mask for the drain function.
-	if (!SetCommMask (device->hFile, EV_TXEMPTY)) {
-		TRACE ("SetCommMask");
-		CloseHandle (device->hFile);
-		free (device);
-		return -1;
-	}
-
 	*out = device;
 
 	return 0;
@@ -384,14 +376,8 @@ serial_drain (serial* device)
 	if (device == NULL)
 		return -1; // ERROR_INVALID_PARAMETER (The parameter is incorrect)
 
-	BOOL rc = 0;
-	DWORD mask = 0;
-	do {
-		rc = WaitCommEvent (device->hFile, &mask, NULL);
-	} while ( rc && !(mask & EV_TXEMPTY) );
-
-	if (!rc) {
-		TRACE ("WaitCommEvent");
+	if (!FlushFileBuffers (device->hFile)) {
+		TRACE ("FlushFileBuffers");
 		return -1;
 	}