From cb1e7a9bd514b346b6891298b249d3594c1213b1 Mon Sep 17 00:00:00 2001
From: Toni Wilen <twilen@winuae.net>
Date: Sun, 14 Feb 2016 18:37:08 +0200
Subject: [PATCH] Do not generate new uae_Signal() if previous is still queued.
 It can cause deadlock if buffer fills completely.

---
 sana2.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/sana2.cpp b/sana2.cpp
index 555d7d25..f3383ce9 100644
--- a/sana2.cpp
+++ b/sana2.cpp
@@ -330,11 +330,19 @@ static int openfail (TrapContext *ctx, uaecptr ioreq, int error)
 }
 
 static uaecptr uaenet_worker;
+static int uaenet_signal_state;
+
+static void uaenet_signal_done(int cmd)
+{
+	uaenet_signal_state = 1;
+}
 
 static void uaenet_int(void)
 {
-	if (uaenet_worker)
-		uae_Signal(uaenet_worker, 0x100);
+	if (uaenet_worker && uaenet_signal_state) {
+		uaenet_signal_state = 0;
+		uae_Signal_with_Func(uaenet_worker, 0x100, uaenet_signal_done);
+	}
 }
 
 static uae_u32 REGPARAM2 uaenet_int_handler (TrapContext *ctx);
@@ -1886,6 +1894,7 @@ void netdev_start_threads (void)
 
 void netdev_reset (void)
 {
+	uaenet_signal_state = 1;
 	if (!currprefs.sana2)
 		return;
 	dev_reset ();
-- 
2.47.3